User:Plantdrew/JepsonCommonName
| This is a Wikipedia user page. This is not an encyclopedia article or the talk page for an encyclopedia article. If you find this page on any site other than Wikipedia, you are viewing a mirror site. Be aware that the page may be outdated and that the user in whose space this page is located may have no personal affiliation with any site other than Wikipedia. The original page is located at https://en.wikipedia.org/wiki/User:Plantdrew/JepsonCommonName. |
- Abies amabilis pacific silver fir
- Abies bracteata bristlecone fir
- Abies concolor white fir
- Abies grandis grand fir
- Abies lasiocarpa subalpine fir
- Abies magnifica shasta red fir
- Abies magnifica california red fir
- Abies procera noble fir
- Abronia alpina ramshaw meadows abronia
- Abronia maritima red sand-verbena
- Abronia nana coville's dwarf abronia
- Abronia umbellata pink sand-verbena
- Abronia villosa chaparral sand-verbena
- Abutilon parvulum dwarf abutilon
- Abutilon theophrasti velvet-leaf
- Acacia baileyana cootamundra wattle
- Acacia cyclops western coastal wattle
- Acacia dealbata silver wattle
- Acacia decurrens green wattle
- Acacia longifolia sydney golden wattle
- Acacia mearnsii black wattle
- Acacia melanoxylon blackwood acacia
- Acacia paradoxa kangaroo thorn
- Acacia podalyriifolia queensland silver wattle
- Acacia pycnantha golden wattle
- Acacia redolens vanilla-scented wattle
- Acacia retinodes everblooming wattle
- Acacia saligna golden wreath wattle
- Acacia verticillata star acacia prickly moses
- Acaena novae-zelandiae biddy-biddy
- Acamptopappus shockleyi shockley's goldenhead
- Acamptopappus sphaerocephalus rayless goldenhead
- Acanthomintha duttonii san mateo thornmint
- Acanthomintha ilicifolia san diego thornmint
- Acanthomintha lanceolata santa clara thornmint
- Acanthomintha obovata heart-leaved thornmint
- Acanthomintha obovata san benito thornmint
- Acanthoscyphus parishii abrams' oxytheca
- Acanthoscyphus parishii cienega seca oxytheca
- Acanthoscyphus parishii cushenbury oxytheca
- Acanthoscyphus parishii parish's oxytheca
- Acanthoscyphus parishii flowery puncturebract
- Acer campestre hedge maple
- Acer circinatum vine maple
- Acer glabrum mountain maple
- Acer macrophyllum big-leaf maple
- Acer negundo box elder
- Acer saccharinum silver maple
- Achyronychia cooperi onyx flower frost-mat
- Acleisanthes longiflora angel trumpets
- Acleisanthes nevadensis desert wing-fruit
- Acmispon argophyllus san clemente island bird's-foot trefoil
- Acmispon argophyllus santa cruz island bird's-foot trefoil
- Acmispon argyraeus scrub lotus
- Acmispon argyraeus providence mountains lotus
- Acmispon dendroideus island broom
- Acmispon dendroideus san clemente island lotus
- Acmispon dendroideus san miguel island deerweed
- Acmispon glaber deerweed california broom
- Acmispon haydonii pygmy lotus
- Acmispon prostratus nuttall's acmispon
- Acmispon rubriflorus red-flowered bird's-foot trefoil
- Acroptilon repens russian knapweed
- Adenocaulon bicolor trail plant
- Adenostoma fasciculatum chamise greasewood
- Adenostoma sparsifolium red shank ribbon wood
- Adiantum aleuticum five-finger fern
- Adiantum capillus-veneris southern maidenhair
- Adiantum jordanii california maidenhair
- Adolphia californica california adolphia
- Adonis aestivalis summer pheasant's eye
- Aegilops cylindrica jointed goat grass
- Aegilops geniculata ovate goat grass
- Aegilops neglecta three-awned goat grass
- Aegilops triuncialis barbed goat grass
- Aeschynomene rudis rough jointvetch
- Aesculus californica california buckeye
- Agave deserti desert agave
- Agave deserti simple desert agave
- Agave shawii shaw agave
- Agave utahensis ivory-spined agave
- Agave utahensis clark mountain agave
- Agave utahensis utah agave
- Ageratina adenophora crofton weed
- Ageratina herbacea desert ageratina
- Ageratina occidentalis western snakeroot
- Ageratina shastensis shasta ageratina
- Agrimonia gryposepala common agrimony
- Agrimonia striata britton's agrimony grooved agrimony
- Agrostis avenacea pacific bent grass
- Agrostis blasdalei blasdale's bent grass
- Agrostis capillaris colonial bent
- Agrostis densiflora california bent grass
- Agrostis elliottiana sierra bent grass
- Agrostis exarata spike bent grass
- Agrostis gigantea redtop
- Agrostis hallii hall's bent grass
- Agrostis hendersonii henderson's bent grass
- Agrostis hooveri hoover's bent grass
- Agrostis humilis mountain bent grass
- Agrostis idahoensis idaho redtop
- Agrostis lacuna-vernalis vernal pool bent grass
- Agrostis microphylla small-leaf bent grass
- Agrostis oregonensis oregon redtop
- Agrostis pallens dune bent grass
- Agrostis scabra rough bent grass
- Agrostis stolonifera creeping bent
- Agrostis tandilensis kennedy's bent grass
- Agrostis variabilis mountain bent grass
- Ailanthus altissima tree of heaven
- Aira caryophyllea silver hair grass
- Aira elegans elegant hair grass
- Aira praecox early hair grass
- Albizia julibrissin silk tree mimosa
- Albizia lophantha plume acacia
- Alcea rosea hollyhock
- Alhagi maurorum camel thorn
- Aliciella humillima smallest aliciella
- Aliciella hutchinsifolia desert pale aliciella
- Aliciella latifolia broad-leaved aliciella
- Aliciella leptomeria sand aliciella
- Aliciella lottiae lott's aliciella
- Aliciella micromeria dainty aliciella
- Aliciella monoensis mono lake aliciella
- Aliciella ripleyi ripley's aliciella
- Aliciella triodon coyote gilia
- Alisma gramineum grass alisma
- Allium atrorubens great basin onion
- Allium atrorubens inyo onion
- Allium fimbriatum purdy's onion
- Allium hickmanii hickman's onion
- Allium hoffmanii beegum onion
- Allium howellii mount pinos onion
- Allium jepsonii jepson's onion
- Allium marvinii yucaipa onion
- Allium munzii munz's onion
- Allium nevadense nevada onion
- Allium parishii parish's onion
- Allium peninsulare franciscan onion
- Allium punctum dotted onion
- Allium sanbornii congdon's onion
- Allium sanbornii sanborn's onion
- Allium sativum garlic
- Allium sharsmithiae sharsmith's onion
- Allium shevockii spanish needle onion
- Allium siskiyouense siskiyou onion
- Allium tribracteatum three-bracted onion
- Allium tuolumnense rawhide hill onion
- Allium yosemitense yosemite onion
- Alnus cordata italian alder
- Alnus incana mountain alder
- Alnus rhombifolia white alder
- Alnus rubra red alder
- Alnus viridis siberian alder
- Alnus viridis thinleaf or sitka alder
- Alnus viridis green alder
- Alopecurus aequalis sonoma alopecurus
- Alopecurus aequalis short-awn foxtail
- Alopecurus geniculatus water foxtail
- Alopecurus pratensis meadow foxtail
- Aloysia wrightii wright's beebrush
- Alternanthera philoxeroides alligator weed
- Alyogyne huegelii blue hibiscus
- Amaranthus albus tumbleweed
- Amaranthus arenicola sand amaranth
- Amaranthus blitoides procumbent pigweed
- Amaranthus californicus californian amaranth
- Amaranthus caudatus love-lies-bleeding foxtail amaranth quilete
- Amaranthus cruentus purple amaranth
- Amaranthus fimbriatus fringed amaranth
- Amaranthus hybridus smooth pigweed green amaranth
- Amaranthus hypochondriacus prince's-feather
- Amaranthus palmeri palmer's amaranth
- Amaranthus powellii powell's amaranth
- Amaranthus retroflexus redroot pigweed
- Amaranthus spinosus spiny amaranth thorny amaranth
- Amaranthus torreyi torrey's amaranth
- Amaranthus tuberculatus common waterhemp
- Amaranthus viridis slender amaranth
- Amaranthus watsonii watson's amaranth
- Amaryllis belladonna naked ladies
- Ambrosia ×platyspina hybrid bur-sage
- Ambrosia acanthicarpa annual bur-sage
- Ambrosia ambrosioides big bur-sage
- Ambrosia artemisiifolia common ragweed
- Ambrosia chamissonis beach bur-sage
- Ambrosia chenopodiifolia san diego bur-sage
- Ambrosia dumosa white bur-sage
- Ambrosia eriocentra woolly bur-sage
- Ambrosia ilicifolia holly-leaved bur-sage
- Ambrosia monogyra singlewhorl burrobrush
- Ambrosia psilostachya western ragweed
- Ambrosia pumila san diego ambrosia
- Ambrosia salsola common burrobrush cheesebush
- Ambrosia trifida giant ragweed
- Amelanchier utahensis utah service-berry
- Ammi visnaga bisnaga
- Ammophila arenaria european beachgrass
- Ammoselinum giganteum desert sand-parsley
- Amorpha californica napa false indigo
- Amsinckia douglasiana douglas' fiddleneck
- Amsinckia eastwoodiae eastwood's fiddleneck
- Amsinckia furcata forked fiddleneck
- Amsinckia grandiflora large-flowered fiddleneck
- Amsinckia intermedia common fiddleneck
- Amsinckia lunaris bent-flowered fiddleneck
- Amsinckia lycopsoides bugloss-flowered fiddleneck
- Amsinckia menziesii common fiddleneck small-flowered fiddleneck
- Amsinckia retrorsa rigid fiddleneck
- Amsinckia spectabilis mesa fiddleneck
- Amsinckia spectabilis seaside fiddleneck
- Amsinckia tessellata carrizo fiddleneck
- Amsinckia tessellata desert fiddleneck
- Amsinckia vernicosa waxy fiddleneck
- Anchusa azurea garden alkanet
- Anchusa officinalis common alkanet
- Ancistrocarphus filagineus woolly fishhooks
- Ancistrocarphus keilii santa ynez groundstar
- Andropogon glomeratus southwestern bushy bluestem
- Andropogon virginicus broomsedge bluestem
- Androsace elongata california androsace
- Androsace filiformis slender-stemmed androsace
- Androsace occidentalis western rock-jasmine
- Androsace septentrionalis pygmy-flower rock-jasmine
- Androstephium breviflorum small-flowered androstephium
- Anemopsis californica yerba mansa
- Anethum graveolens dill
- Angelica arguta angelica
- Angelica callii call's angelica
- Angelica kingii king's angelica
- Angelica lucida sea-watch
- Anisocarpus madioides woodland tarweed
- Anisocarpus scabridus scabrid alpine tarplant
- Anisodontea capensis cape mallow
- Anoda cristata violettas
- Anoda pentaschista field anoda
- Anredera cordifolia mignonette vine
- Antennaria flagellaris stoloniferous pussy-toes
- Antennaria marginata white-margined everlasting
- Antennaria pulchella beautiful pussy-toes
- Antennaria suffrutescens evergreen everlasting
- Anthemis arvensis corn chamomile
- Anthemis cotula mayweed
- Anthoxanthum aristatum annual vernal grass
- Anthoxanthum nitens vanilla grass
- Anthoxanthum occidentale california sweet grass
- Anthoxanthum odoratum sweet vernal grass
- Anthriscus caucalis bur-chervil
- Antirrhinum ovatum oval-leaved snapdragon
- Antirrhinum subcordatum dimorphic snapdragon
- Antirrhinum virga twig-like snapdragon
- Aphanisma blitoides aphanisma
- Apium graveolens celery
- Apocynum androsaemifolium bitter dogbane
- Apocynum cannabinum indian hemp
- Aponogeton distachyos cape-pondweed
- Aptenia cordifolia baby sun-rose
- Arabidopsis thaliana mouse-ear cress thale cress
- Arabis blepharophylla coast rockcress
- Arabis mcdonaldiana mcdonald's rockcress
- Arabis modesta modest rockcress
- Arabis oregana oregon rockcress
- Aralia californica elk clover
- Arbutus menziesii pacific madrone
- Arceuthobium americanum lodgepole-pine dwarf mistletoe
- Arceuthobium campylopodum western dwarf mistletoe
- Arceuthobium douglasii douglas-fir dwarf mistletoe
- Arctomecon merriamii white bear poppy
- Arctostaphylos andersonii anderson's manzanita
- Arctostaphylos auriculata mount diablo manzanita
- Arctostaphylos bakeri baker's manzanita
- Arctostaphylos bakeri the cedars manzanita
- Arctostaphylos canescens hoary manzanita
- Arctostaphylos canescens sonoma canescent manzanita
- Arctostaphylos catalinae santa catalina island manzanita
- Arctostaphylos columbiana columbia manzanita
- Arctostaphylos confertiflora santa rosa island manzanita
- Arctostaphylos crustacea crinite manzanita
- Arctostaphylos crustacea eastwood's brittle-leaf manzanita
- Arctostaphylos crustacea island manzanita
- Arctostaphylos crustacea rose's manzanita
- Arctostaphylos crustacea santa cruz island manzanita
- Arctostaphylos cruzensis arroyo de la cruz manzanita
- Arctostaphylos densiflora vine hill manzanita
- Arctostaphylos edmundsii little sur manzanita
- Arctostaphylos franciscana franciscan manzanita
- Arctostaphylos gabilanensis gabilan mountains manzanita
- Arctostaphylos glandulosa del mar manzanita
- Arctostaphylos glandulosa cushing manzanita
- Arctostaphylos glandulosa san gabriel manzanita
- Arctostaphylos glutinosa schreiber's manzanita
- Arctostaphylos hispidula howell's manzanita
- Arctostaphylos hookeri hearsts' manzanita
- Arctostaphylos hookeri hooker's manzanita
- Arctostaphylos hooveri hoover's manzanita
- Arctostaphylos imbricata san bruno mountain manzanita
- Arctostaphylos klamathensis klamath manzanita
- Arctostaphylos luciana santa lucia manzanita
- Arctostaphylos malloryi mallory's manzanita
- Arctostaphylos manzanita konocti manzanita
- Arctostaphylos manzanita contra costa manzanita
- Arctostaphylos mewukka true's manzanita
- Arctostaphylos montana mount tamalpais manzanita
- Arctostaphylos montana presidio manzanita
- Arctostaphylos montaraensis montara manzanita
- Arctostaphylos montereyensis toro manzanita
- Arctostaphylos morroensis morro manzanita
- Arctostaphylos myrtifolia ione manzanita
- Arctostaphylos nevadensis knight's manzanita
- Arctostaphylos nevadensis pine-mat manzanita
- Arctostaphylos nissenana nissenan manzanita
- Arctostaphylos nortensis del norte manzanita
- Arctostaphylos nummularia pygmy manzanita
- Arctostaphylos obispoensis bishop manzanita
- Arctostaphylos ohloneana ohlone manzanita
- Arctostaphylos osoensis oso manzanita
- Arctostaphylos otayensis otay manzanita
- Arctostaphylos pacifica pacific manzanita
- Arctostaphylos pajaroensis pajaro manzanita
- Arctostaphylos pallida pallid manzanita
- Arctostaphylos parryana desert manzanita
- Arctostaphylos parryana parry manzanita
- Arctostaphylos parryana interior manzanita
- Arctostaphylos patula greenleaf manzanita
- Arctostaphylos pechoensis pecho manzanita
- Arctostaphylos pilosula santa margarita manzanita
- Arctostaphylos pumila sandmat manzanita
- Arctostaphylos purissima la purisima manzanita
- Arctostaphylos rainbowensis rainbow manzanita
- Arctostaphylos refugioensis refugio manzanita
- Arctostaphylos regismontana kings mountain manzanita
- Arctostaphylos rudis sand mesa manzanita
- Arctostaphylos silvicola bonny doon manzanita
- Arctostaphylos stanfordiana rincon ridge manzanita
- Arctostaphylos stanfordiana raiche's manzanita
- Arctostaphylos tomentosa dacite manzanita
- Arctostaphylos uva-ursi bear-berry kinnikinnick
- Arctostaphylos virgata marin manzanita
- Arctostaphylos viridissima white-haired manzanita
- Arctostaphylos viscida mariposa manzanita
- Arctotheca calendula capeweed
- Arctotheca prostrata prostrate capeweed
- Arctotis venusta blue-eyed african daisy
- Arenaria lanuginosa rock sandwort spreading sandwort
- Arenaria paludicola marsh sandwort
- Arenaria serpyllifolia thymeleaf sandwort
- Argemone munita chicalote
- Argyrochosma jonesii jones' false cloak-fern
- Argyrochosma limitanea southwestern false cloak-fern
- Aristida adscensionis sixweeks three-awn
- Aristida californica california three-awn mojave three-awn
- Aristida dichotoma churchmouse three-awn
- Aristida divaricata poverty three-awn
- Aristida oligantha oldfield three-awn
- Aristida purpurea fendler three-awn
- Aristida purpurea red three-awn
- Aristida purpurea nealley three-awn
- Aristida purpurea parish three-awn
- Aristida purpurea purple three-awn
- Aristida purpurea wright three-awn
- Aristida ternipes hook three-awn
- Aristocapsa insignis indian valley spineflower
- Armoracia rusticana horse radish
- Arnica cernua serpentine arnica
- Arnica chamissonis chamisso arnica
- Arnica cordifolia heartleaf arnica
- Arnica dealbata mock leopardbane
- Arnica discoidea rayless arnica
- Arnica fulgens hillside arnica
- Arnica lanceolata clasping arnica
- Arnica latifolia broadleaf arnica
- Arnica longifolia spearleaf arnica
- Arnica mollis hairy arnica
- Arnica nevadensis sierra arnica
- Arnica ovata sticky leaf arnica
- Arnica parryi nodding arnica
- Arnica sororia twin arnica
- Arnica spathulata klamath arnica
- Arnica venosa shasta county arnica
- Arnica viscosa mount shasta arnica
- Arrhenatherum elatius tall oat grass
- Artemisia annua sweet annie
- Artemisia arbuscula low sagebrush
- Artemisia biennis biennial wormwood
- Artemisia bigelovii bigelow sagewort
- Artemisia borealis boreal sage
- Artemisia californica california sagebrush
- Artemisia cana silver sagebrush
- Artemisia douglasiana mugwort
- Artemisia dracunculus tarragon
- Artemisia ludoviciana silver wormwood
- Artemisia michauxiana lemon sagewort
- Artemisia nesiotica island sagebrush
- Artemisia norvegica alpine sagewort
- Artemisia nova black sagebrush
- Artemisia palmeri san diego sagewort
- Artemisia pycnocephala coastal sagewort
- Artemisia rothrockii rothrock sagebrush
- Artemisia spiciformis snowfield sagebrush
- Artemisia spinescens budsage
- Artemisia suksdorfii coastal mugwort
- Artemisia tridentata big sagebrush
- Artemisia tridentata mountain sagebrush
- Artemisia tridentata wyoming sagebrush
- Arum italicum italian arum
- Arum palaestinum black calla solomon's lily
- Arundo donax giant reed
- Asarum marmoratum marbled wild-ginger
- Asclepias albicans white-stemmed milkweed
- Asclepias asperula antelope-horns
- Asclepias californica california milkweed
- Asclepias cordifolia purple milkweed
- Asclepias cryptoceras humboldt mountains milkweed
- Asclepias curassavica bloodflower milkweed
- Asclepias eriocarpa kotolo
- Asclepias erosa desert milkweed
- Asclepias fascicularis narrow-leaf milkweed
- Asclepias latifolia broadleaf milkweed
- Asclepias nyctaginifolia mojave milkweed
- Asclepias solanoana serpentine milkweed
- Asclepias speciosa showy milkweed
- Asclepias subulata rush milkweed
- Asclepias vestita woolly milkweed
- Aspidotis californica california lace fern
- Aspidotis carlotta-halliae carlotta hall's lace fern
- Aspidotis densa dense lace fern
- Asplenium septentrionale northern spleenwort
- Asplenium trichomanes maidenhair spleenwort
- Asplenium vespertinum western spleenwort
- Asplenium viride green spleenwort
- Astragalus agnicidus humboldt county milkvetch
- Astragalus agrestis field milkvetch
- Astragalus albens cushenbury milkvetch
- Astragalus allochrous playa milkvetch
- Astragalus anxius ash valley milkvetch
- Astragalus argophyllus silver-leaved milkvetch
- Astragalus atratus darwin mesa milkvetch
- Astragalus bicristatus crested milkvetch
- Astragalus brauntonii braunton's milkvetch
- Astragalus breweri brewer's milkvetch
- Astragalus californicus klamath milkvetch
- Astragalus calycosus torrey's milkvetch
- Astragalus cicer chickpea milkvetch
- Astragalus cimae cima milkvetch
- Astragalus cimae inflated cima milkvetch
- Astragalus claranus clara hunt's milkvetch
- Astragalus clevelandii cleveland's milkvetch
- Astragalus coccineus scarlet milkvetch
- Astragalus crotalariae salton milkvetch
- Astragalus curtipes morro milkvetch
- Astragalus curvicarpus sickle milkvetch
- Astragalus deanei dean's milkvetch
- Astragalus didymocarpus miles' milkvetch
- Astragalus didymocarpus two-seeded milkvetch
- Astragalus douglasii jacumba milkvetch
- Astragalus douglasii douglas milkvetch
- Astragalus ertterae walker pass milkvetch
- Astragalus filipes basalt milkvetch
- Astragalus funereus black milkvetch
- Astragalus gambelianus gambel milkvetch little blue loco
- Astragalus geyeri geyer's milkvetch
- Astragalus gibbsii gibbs' milkvetch
- Astragalus gilmanii gilman's milkvetch
- Astragalus hornii horn's milkvetch
- Astragalus insularis harwood's milkvetch
- Astragalus inversus susanville milkvetch
- Astragalus inyoensis inyo milkvetch
- Astragalus iodanthus snake milkvetch
- Astragalus iodanthus humboldt river milkvetch
- Astragalus jaegerianus lane mountain milkvetch
- Astragalus johannis-howellii long valley milkvetch
- Astragalus kentrophyta sweetwater mountains milkvetch
- Astragalus kentrophyta spiny-leaved milkvetch
- Astragalus kentrophyta spiny milkvetch
- Astragalus layneae layne milkvetch
- Astragalus lemmonii lemmon's milkvetch
- Astragalus lentiformis lens-pod milkvetch
- Astragalus lentiginosus san antonio milkvetch
- Astragalus lentiginosus borrego milkvetch
- Astragalus lentiginosus coachella valley milkvetch
- Astragalus lentiginosus fremont's milkvetch
- Astragalus lentiginosus kern plateau milkvetch
- Astragalus lentiginosus shining milkvetch
- Astragalus lentiginosus fish slough milkvetch
- Astragalus lentiginosus sodaville milkvetch
- Astragalus lentiginosus big bear valley milkvetch
- Astragalus lentiginosus freckled milkvetch
- Astragalus leucolobus big bear valley woollypod
- Astragalus macrodon salinas milkvetch
- Astragalus magdalenae peirson's milkvetch
- Astragalus miguelensis san miguel island milkvetch
- Astragalus mohavensis curved-pod milkvetch
- Astragalus monoensis mono milkvetch
- Astragalus nevinii san clemente island milkvetch
- Astragalus newberryi newberry's milkvetch
- Astragalus nutans providence mountains milkvetch
- Astragalus nuttallianus small-flowered milkvetch
- Astragalus nuttallii ocean bluff milkvetch
- Astragalus nuttallii nuttall's milkvetch
- Astragalus oocarpus san diego milkvetch
- Astragalus oophorus lavin's milkvetch
- Astragalus oophorus egg milkvetch
- Astragalus oxyphysus stanislaus milkvetch
- Astragalus pachypus jaeger's bush milkvetch
- Astragalus pachypus bush milkvetch
- Astragalus pauperculus depauperate milkvetch
- Astragalus platytropis broad-keeled milkvetch
- Astragalus preussii lancaster milkvetch
- Astragalus preussii preuss' milkvetch
- Astragalus pseudiodanthus tonopah milkvetch
- Astragalus pulsiferae modoc plateau milkvetch
- Astragalus pulsiferae pulsifer's milkvetch
- Astragalus pulsiferae suksdorf's milkvetch
- Astragalus purshii pursh's milkvetch
- Astragalus pycnostachyus ventura marsh milkvetch
- Astragalus pycnostachyus coastal marsh milkvetch
- Astragalus rattanii jepson's milkvetch
- Astragalus rattanii rattan's milkvetch
- Astragalus ravenii raven's milkvetch
- Astragalus sepultipes bishop milkvetch
- Astragalus serenoi shockley's milkvetch
- Astragalus shevockii shevock's milkvetch
- Astragalus subvestitus kern county milkvetch
- Astragalus tener ferris' milkvetch
- Astragalus tener alkali milkvetch
- Astragalus tener coastal dunes milkvetch
- Astragalus tidestromii tidestrom's milkvetch
- Astragalus traskiae trask's milkvetch
- Astragalus tricarinatus triple-ribbed milkvetch
- Astragalus trichopodus antisell milkvetch
- Astragalus trichopodus santa barbara milkvetch
- Astragalus umbraticus bald mountain milkvetch
- Astragalus webberi webber's milkvetch
- Astragalus whitneyi woolly-leaved milkvetch
- Astragalus whitneyi balloon milkvetch
- Astrolepis cochisensis scaly cloak-fern
- Atriplex amnicola swamp saltbush
- Atriplex argentea hillman's silverscale
- Atriplex argentea pahrump orach
- Atriplex argentea silverscale
- Atriplex canescens caleb saltbush
- Atriplex canescens slenderleaf saltbush
- Atriplex canescens salton saltbush
- Atriplex canescens four-wing saltbush
- Atriplex confertifolia shadscale
- Atriplex cordulata earlimart orach
- Atriplex cordulata heartscale
- Atriplex coronata crownscale
- Atriplex coronata san jacinto valley crownscale
- Atriplex coronata lost hills crownscale
- Atriplex coulteri coulter's saltbush
- Atriplex depressa brittlescale
- Atriplex dioica thickleaf orach
- Atriplex elegans mecca orach
- Atriplex elegans wheelscale
- Atriplex fruticulosa ballscale little oak orach
- Atriplex gardneri falcate saltbush
- Atriplex gmelinii gmelin's saltbush
- Atriplex hortensis garden orach
- Atriplex hymenelytra desert-holly
- Atriplex lentiformis big saltbush
- Atriplex leucophylla beach saltbush
- Atriplex micrantha russian atriplex
- Atriplex minuscula lesser saltscale
- Atriplex pacifica south coast saltscale
- Atriplex parishii parish's brittlescale
- Atriplex patula spear orach
- Atriplex persistens vernal pool smallscale
- Atriplex polycarpa allscale saltbush
- Atriplex prostrata fat-hen
- Atriplex pusilla smooth saltbush
- Atriplex rosea tumbling orach
- Atriplex semibaccata australian saltbush
- Atriplex serenana davidson's saltscale
- Atriplex serenana bractscale stinking orach
- Atriplex spinifera spiny saltbush
- Atriplex suberecta sprawling saltbush
- Atriplex subtilis subtle orach
- Atriplex torreyi torrey's saltbush
- Atriplex truncata wedgescale
- Atriplex tularensis bakersfield smallscale
- Avena barbata slender wild oat
- Avena fatua wild oat
- Avena sativa cultivated oat
- Avena sterilis animated oat
- Avicennia marina gray mangrove
- Ayenia compacta california ayenia
- Azolla microphylla mexican mosquito fern
- Baccharis glutinosa marsh baccharis
- Baccharis malibuensis malibu baccharis
- Baccharis pilularis coyote brush
- Baccharis plummerae san simeon baccharis
- Baccharis plummerae plummer's baccharis
- Baccharis salicifolia mule fat
- Baccharis sarothroides broom baccharis
- Baccharis sergiloides desert baccharis
- Baccharis vanessae encinitas baccharis
- Bahiopsis laciniata san diego viguiera
- Bahiopsis parishii parish's goldeneye
- Bahiopsis reticulata death valley goldeneye
- Balsamorhiza lanata woolly balsamroot
- Balsamorhiza sericea silky balsamroot
- Balsamorhiza serrata serrated balsamroot
- Barbarea verna early winter cress
- Barbarea vulgaris yellow rocket
- Batis maritima saltwort beachwort
- Beckmannia syzigachne american slough grass
- Bellardia trixago mediterranean linseed
- Bellis perennis english daisy
- Bensoniella oregona bensoniella
- Berberis harrisoniana kofa mountain barberry
- Berberis nevinii nevin's barberry
- Berberis pinnata island barberry
- Bergerocactus emoryi golden-spined cereus
- Beta vulgaris sea beet
- Betula glandulosa dwarf resin birch
- Betula occidentalis water birch
- Bidens cernua nodding bur-marigold
- Bidens frondosa sticktight
- Bidens laevis bur-marigold
- Bidens pilosa common beggar-ticks
- Billardiera heterophylla australian bluebell
- Bistorta bistortoides western bistort
- Bituminaria bituminosa arabian pea
- Blechnum spicant deer fern
- Blennosperma bakeri sonoma sunshine
- Blennosperma nanum point reyes blennosperma
- Blepharidachne kingii king's eyelash grass
- Blepharizonia plumosa big tarplant
- Bloomeria clevelandii san diego goldenstar
- Bloomeria crocea mountain goldenstar
- Bloomeria crocea common goldenstar
- Bloomeria humilis dwarf goldenstar
- Boechera acutina pointed rockcress
- Boechera arcuata arching rockcress
- Boechera bodiensis bodie hills rockcress
- Boechera breweri brewer's rockcress
- Boechera breweri shasta rockcress
- Boechera calderi calder's rockcress
- Boechera californica california rockcress
- Boechera cobrensis masonic rockcress
- Boechera constancei constance's rockcress
- Boechera covillei coville's rockcress
- Boechera davidsonii davidson's rockcress
- Boechera depauperata soldier rockcress
- Boechera dispar pinyon rockcress
- Boechera divaricarpa spreadingpod rockcress
- Boechera elkoensis elko rockcress
- Boechera evadens hidden rockcress
- Boechera glaucovalvula bluepod rockcress
- Boechera hoffmannii hoffmann's rockcress
- Boechera howellii howell's rockcress
- Boechera inyoensis inyo rockcress
- Boechera johnstonii johnston's rockcress
- Boechera koehleri koehler's rockcress
- Boechera lemmonii lemmon's rockcress
- Boechera lincolnensis lincoln rockcress
- Boechera lyallii lyall's rockcress
- Boechera parishii parish's rockcress
- Boechera pauciflora hairy stem rockcress
- Boechera paupercula small-flowered rockcress
- Boechera peirsonii peirson's rockcress
- Boechera pendulina rabbit-ear rockcress
- Boechera pendulocarpa dropseed rockcress
- Boechera perennans perennial rockcress
- Boechera pinetorum woodland rockcress
- Boechera pinzliae pinzl's rockcress
- Boechera platysperma pioneer rockcress
- Boechera pratincola meadow rockcress
- Boechera puberula silver rockcress
- Boechera pulchra beautiful rockcress
- Boechera pygmaea tulare county rockcress
- Boechera rectissima bristly leaf rockcress
- Boechera repanda yosemite rockcress
- Boechera retrofracta reflexed rockcress
- Boechera rigidissima trinity mountain rockcress
- Boechera rollei rolle's rockcress
- Boechera rubicundula mount day rockcress
- Boechera serpenticola serpentine rockcress
- Boechera shevockii shevock's rockcress
- Boechera shockleyi shockley's rockcress
- Boechera sparsiflora sicklepod rockcress
- Boechera stricta drummond's rockcress
- Boechera subpinnatifida klamath rockcress
- Boechera suffrutescens woody rockcress
- Boechera tiehmii tiehm's rockcress
- Boechera tularensis tulare rockcress
- Boechera ultraalsa snow mountain rockcress
- Boechera xylopoda bigfoot hybrid rockcress
- Boechera yorkii last chance rockcress
- Boerhavia coccinea scarlet spiderling
- Bolandra californica sierra bolandra
- Bolboschoenus fluviatilis river bulrush
- Bolboschoenus maritimus saltmarsh bulrush alkali bulrush
- Bolboschoenus robustus seacoast bulrush
- Bothriochloa barbinodis cane bluestem
- Bothriochloa ischaemum king ranch bluestem
- Bothriochloa laguroides silver bluestem
- Botrychium ascendens upswept moonwort
- Botrychium crenulatum scalloped moonwort
- Botrychium lineare slender moonwort
- Botrychium lunaria common moonwort
- Botrychium minganense mingan moonwort
- Botrychium montanum western goblin
- Botrychium paradoxum paradox moonwort
- Botrychium pinnatum northwestern moonwort
- Botrychium pumicola pumice moonwort
- Botrychium simplex yosemite moonwort
- Botrychium simplex least moonwort
- Botrychium tunux moosewort
- Botrychium yaaxudakeit giant moonwort
- Bouteloua aristidoides needle grama
- Bouteloua barbata sixweeks grama
- Bouteloua curtipendula side-oats grama
- Bouteloua eriopoda black grama
- Bouteloua gracilis blue grama
- Bouteloua trifida three-awned grama
- Brassica juncea india mustard
- Brassica napus swede rape rapeseed
- Brassica nigra black mustard
- Brassica oleracea cabbage
- Brassica rapa turnip field mustard
- Brickellia atractyloides pungent brickellbush
- Brickellia atractyloides spearleaf brickellbush
- Brickellia californica california brickellbush
- Briza maxima rattlesnake grass large quaking grass
- Briza minor annual quaking grass small quaking grass
- Brodiaea californica california brodiaea
- Brodiaea coronaria garland brodiaea
- Brodiaea elegans harvest brodiaea
- Brodiaea filifolia thread-leaved brodiaea
- Brodiaea insignis kaweah brodiaea
- Brodiaea jolonensis mesa brodiaea chaparral cluster-lily
- Brodiaea kinkiensis san clemente island brodiaea
- Brodiaea leptandra narrow-flowered california brodiaea
- Brodiaea minor small brodiaea
- Brodiaea nana dwarf brodiaea
- Brodiaea orcuttii orcutt's brodiaea
- Brodiaea pallida chinese camp brodiaea
- Brodiaea rosea indian valley brodiaea
- Brodiaea santarosae santa rosa basalt brodiaea
- Brodiaea sierrae sierra foothills brodiaea
- Brodiaea stellaris star brodiaea
- Bromus arenarius australian chess
- Bromus arizonicus arizona brome
- Bromus arvensis field brome
- Bromus berteroanus chilean chess
- Bromus briziformis rattlesnake chess
- Bromus carinatus mountain brome
- Bromus carinatus california brome
- Bromus catharticus rescue grass
- Bromus catharticus chilean brome
- Bromus ciliatus fringed brome
- Bromus commutatus hairy chess meadow brome
- Bromus diandrus ripgut grass
- Bromus grandis tall brome
- Bromus hallii hall's brome
- Bromus hordeaceus soft chess
- Bromus inermis smooth brome hungarian brome
- Bromus japonicus japanese chess japanese brome
- Bromus laevipes chinook brome woodland brome
- Bromus madritensis foxtail chess madrid brome
- Bromus madritensis red brome
- Bromus maritimus maritime brome
- Bromus orcuttianus orcutt's brome
- Bromus polyanthus great basin brome colorado brome
- Bromus porteri nodding brome
- Bromus pseudolaevipes woodland brome
- Bromus racemosus smooth brome
- Bromus richardsonii richardson's brome
- Bromus secalinus rye brome
- Bromus sitchensis sitka brome alaska brome
- Bromus squarrosus corn brome
- Bromus sterilis poverty brome
- Bromus suksdorfii suksdorf's brome
- Bromus tectorum cheat grass downy chess
- Bromus vulgaris columbia brome
- Buddleja davidii butterfly bush summer lilac
- Buddleja saligna false olive
- Buddleja utahensis panamint butterfly bush
- Bulbine semibarbata leek lily
- Bulbostylis capillaris thread-leaved beakseed
- Bursera microphylla littleleaf elephant tree
- Caesalpinia gilliesii bird-of-paradise
- Caesalpinia spinosa tara
- Calamagrostis bolanderi bolander's reed grass
- Calamagrostis breweri short hair reed grass
- Calamagrostis canadensis bluejoint reed grass
- Calamagrostis foliosa leafy reed grass
- Calamagrostis koelerioides dense-pine reed grass
- Calamagrostis muiriana muir's reed grass
- Calamagrostis nutkaensis pacific reed grass
- Calamagrostis ophitidis serpentine reed grass
- Calamagrostis purpurascens purple reed grass
- Calamagrostis rubescens pine reed grass
- Calamagrostis stricta slipstem reed grass
- Calandrinia breweri brewer's calandrinia
- Calandrinia menziesii red maids
- Calendula arvensis field-marigold
- Calendula officinalis pot-marigold
- Calia secundiflora texas mountain laurel
- California macrophylla round-leaved filaree
- Calliandra eriophylla pink fairy-duster
- Callitropsis nootkatensis alaska cedar
- Calochortus albus white globe lily fairy-lantern
- Calochortus amabilis diogenes' lantern
- Calochortus argillosus clay mariposa lily
- Calochortus catalinae catalina mariposa lily
- Calochortus clavatus pleasant valley mariposa lily
- Calochortus clavatus club-haired mariposa lily
- Calochortus clavatus slender mariposa lily
- Calochortus clavatus arroyo de la cruz mariposa lily
- Calochortus coeruleus beavertail-grass
- Calochortus dunnii dunn's mariposa lily
- Calochortus elegans cat's ear
- Calochortus excavatus inyo county star-tulip
- Calochortus greenei greene's mariposa lily
- Calochortus longebarbatus long-haired star-tulip
- Calochortus monanthus single-flowered mariposa lily
- Calochortus monophyllus yellow star-tulip
- Calochortus obispoensis san luis mariposa lily
- Calochortus palmeri san jacinto mariposa lily
- Calochortus palmeri palmer's mariposa lily
- Calochortus panamintensis panamint mariposa lily
- Calochortus persistens siskiyou mariposa lily
- Calochortus plummerae plummer's mariposa lily
- Calochortus pulchellus mount diablo fairy-lantern
- Calochortus raichei the cedars fairy-lantern
- Calochortus simulans la panza mariposa lily
- Calochortus striatus alkali mariposa lily
- Calochortus syntrophus callahan's mariposa lily
- Calochortus tiburonensis tiburon mariposa lily
- Calochortus tolmiei pussy ears
- Calochortus umbellatus oakland star-tulip
- Calochortus uniflorus pink star-tulip
- Calochortus weedii intermediate mariposa lily
- Calochortus westonii shirley meadows star-tulip
- Calycadenia hooveri hoover's calycadenia
- Calycadenia micrantha small-flowered calycadenia
- Calycadenia oppositifolia butte county calycadenia
- Calycadenia truncata rosin weed
- Calycadenia villosa dwarf calycadenia
- Calycanthus occidentalis sweet-shrub spicebush
- Calycoseris parryi yellow tack-stem
- Calycoseris wrightii white tack-stem
- Calyptridium parryi santa cruz mountains pussypaws
- Calyptridium pulchellum mariposa pussypaws
- Calyptridium pygmaeum pygmy pussypaws
- Calyptridium quadripetalum four-petaled pussypaws
- Calyptridium roseum rosy calyptridium
- Calystegia atriplicifolia butte county morning-glory
- Calystegia collina mount saint helena morning-glory
- Calystegia collina three-fingered morning-glory
- Calystegia collina south coast range morning-glory
- Calystegia macrostegia island morning-glory
- Calystegia peirsonii peirson's morning-glory
- Calystegia purpurata coastal bluff morning-glory
- Calystegia sepium santa barbara morning-glory
- Calystegia sepium hedge bindweed
- Calystegia silvatica large bindweed
- Calystegia stebbinsii stebbins' morning-glory
- Calystegia subacaulis cambria morning-glory
- Camissonia benitensis san benito evening-primrose
- Camissonia integrifolia kern river evening-primrose
- Camissonia kernensis kern county evening-primrose
- Camissonia sierrae mono hot springs evening-primrose
- Camissonia sierrae yosemite evening-primrose
- Camissoniopsis bistorta california sun cup
- Camissoniopsis cheiranthifolia beach evening-primrose
- Camissoniopsis guadalupensis san clemente island evening-primrose
- Camissoniopsis hardhamiae hardham's evening-primrose
- Camissoniopsis lewisii lewis' evening-primrose
- Campanula californica swamp harebell
- Campanula exigua chaparral harebell
- Campanula scabrella rough harebell
- Campanula scouleri scouler's harebell
- Campanula sharsmithiae sharsmith's harebell
- Campanula shetleri castle crags harebell
- Campanula wilkinsiana wilkins' harebell
- Canbya candida white pygmy-poppy
- Cannabis sativa hemp marijuana
- Cardamine californica milk maids tooth wort
- Carduus acanthoides plumeless thistle
- Carduus nutans musk thistle
- Carduus pycnocephalus italian thistle
- Carex abrupta abrupt-beaked sedge (group 11h)
- Carex albonigra black-and-white sedge
- Carex alma sturdy sedge
- Carex amplifolia big-leaf sedge (groups 1,5,6)
- Carex angustata narrow-leaved sedge (group 8)
- Carex aquatilis water sedge
- Carex aquatilis sitka sedge
- Carex arcta northern clustered sedge (group 10)
- Carex atherodes wheat sedge (group 1)
- Carex athrostachya long-bracted sedge (groups 11f,h)
- Carex aurea golden sedge (group 8)
- Carex barbarae whiteroot or santa barbara sedge (group 8)
- Carex bolanderi bolander's sedge (group 10)
- Carex brainerdii brainerd's sedge (group 2)
- Carex brevicaulis short-stemmed sedge (group 2)
- Carex breweri brewer's sedge (group 3)
- Carex buxbaumii buxbaum's sedge (group 6)
- Carex californica california sedge (group 4)
- Carex canescens silvery sedge (group 10)
- Carex capitata capitate sedge (group 3)
- Carex comosa bristly sedge (groups 4,5,6)
- Carex concinnoides northwestern sedge (group 2)
- Carex congdonii congdon's sedge (group 1)
- Carex cusickii cusick's sedge (groups 7,9)
- Carex davyi davy's sedge (group 11e)
- Carex deflexa mountain mat sedge (group 2)
- Carex densa dense sedge (group 9)
- Carex diandra lesser tussock sedge (group 9)
- Carex disperma two-seeded sedge (group 9)
- Carex divulsa gray sedge (group 9)
- Carex douglasii douglas' sedge (group 7)
- Carex duriuscula spikeletrush sedge (group 7)
- Carex echinata star sedge
- Carex echinata coastal star sedge
- Carex exsiccata western inflated sedge (group 5)
- Carex feta green-sheathed sedge (group 11a)
- Carex filifolia sagebrush sedge
- Carex filifolia thread-leaved sedge
- Carex fissuricola cleft sedge (groups 2,4)
- Carex fracta fragile-sheathed sedge (groups 11b,f,g)
- Carex geyeri geyer's sedge
- Carex globosa round-fruited sedge (group 2)
- Carex gracilior slender sedge (groups 11c,d,h)
- Carex gynodynama wonder-woman sedge (group 1)
- Carex halliana oregon sedge (group 2)
- Carex harfordii harford's sedge monterey sedge (groups 11d,f,h)
- Carex hassei hasse's sedge (groups 4,8)
- Carex haydeniana cloud or hayden's sedge (groups 11e,h)
- Carex helleri heller's sedge (group 6)
- Carex hendersonii timber or henderson's sedge (group 4)
- Carex heteroneura smooth-fruited sedge (groups 4,6)
- Carex hirtissima fuzzy sedge (groups 1,4)
- Carex hoodii hood's sedge (group 9)
- Carex hystericina porcupine sedge (groups 5,6)
- Carex idahoa idaho sedge (groups 3,6)
- Carex illota sheep sedge (groups 10,11c)
- Carex incurviformis mount dana or incurved sedge (group 9)
- Carex infirminervia weakly veined sedge (groups 7,10)
- Carex inops volcano or long-rhizomed sedge (group 2)
- Carex integra smooth-beaked sedge (group 11c)
- Carex interior inland sedge (group 10)
- Carex inversa kangaroo or knob sedge (group 10)
- Carex jonesii jones' sedge (group 9)
- Carex klamathensis klamath sedge (groups 4,6)
- Carex laeviculmis smooth-stemmed sedge (group 10)
- Carex lasiocarpa woolly-fruited sedge (groups 1,2)
- Carex leavenworthii leavenworth sedge (group 9)
- Carex lemmonii lemmon's sedge (group 4)
- Carex lenticularis tarn sedge
- Carex lenticularis lagoon sedge
- Carex lenticularis lakeshore sedge
- Carex leporina hare or oval sedge (group 11d)
- Carex leporinella bog hare sedge (group 11d)
- Carex leptalea bristle-stalked sedge (group 3)
- Carex leptopoda slender-footed sedge (group 10)
- Carex limosa mud sedge (group 6)
- Carex livida livid sedge (groups 4,6)
- Carex longii green-and-white sedge (group 11a)
- Carex luzulifolia little-leaved sedge (group 4)
- Carex luzulina woodrush sedge (groups 2,4)
- Carex lyngbyei lyngbye's sedge (group 8)
- Carex mariposana mariposa sedge (group 11h)
- Carex mendocinensis mendocino sedge (groups 1,2,4)
- Carex mertensii mertens' sedge (groups 4,6)
- Carex microptera small-winged sedge (group 11h)
- Carex multicaulis stick sedge (group 3)
- Carex multicostata many-ribbed sedge (groups 11b,g)
- Carex nebrascensis nebraska sedge (group 8)
- Carex nervina sierra sedge (group 9)
- Carex neurophora veined or alpine nerved sedge (group 9)
- Carex nigricans black alpine sedge (group 3)
- Carex nudata torrent sedge (group 8)
- Carex obispoensis san luis obispo sedge (group 2)
- Carex obnupta slough sedge (group 8)
- Carex occidentalis western sedge (group 9)
- Carex pachycarpa furrowed broomsedge (groups 11b,e,g)
- Carex pachystachya starry broomsedge (group 11h)
- Carex pansa sand dune sedge (group 7)
- Carex pellita woolly sedge (groups 1,2)
- Carex pendula pendulous sedge (groups 4,5,6)
- Carex petasata liddon's sedge (groups 11d,e,g,h)
- Carex phaeocephala dunhead or alpine hare sedge (group 11d)
- Carex praeceptorum teacher sedge (group 10)
- Carex praegracilis black creeper or freeway sedge (group 7)
- Carex praticola northern meadow sedge (groups 11d,e,f)
- Carex preslii presl's sedge (groups 11g,h)
- Carex proposita potato chip sedge (group 11h)
- Carex raynoldsii raynold's sedge (groups 4,5,6)
- Carex rossii ross' sedge (group 2)
- Carex saliniformis deceiving sedge (group 8)
- Carex sartwelliana sartwell's or yosemite sedge (group 1)
- Carex scabriuscula siskiyou sedge (groups 1,2)
- Carex schottii schott's sedge (group 8)
- Carex scirpoidea western single-spiked sedge (groups 1,2)
- Carex scoparia pointed broomsedge (groups 11a,g)
- Carex scopulorum mountain sedge (group 8)
- Carex senta western rough sedge (group 8)
- Carex serpenticola serpentine sedge (group 2)
- Carex serratodens saw-toothed sedge (groups 4,6)
- Carex sheldonii sheldon's sedge (group 1)
- Carex simulata short-beaked or analog sedge (group 7)
- Carex specifica narrow-fruited sedge (groups 11b,d,e,g)
- Carex spectabilis showy sedge (group 6)
- Carex spissa san diego sedge (groups 2,4,5,6)
- Carex stevenii steven's sedge (group 6)
- Carex stipata awl-fruited sedge (group 9)
- Carex straminiformis mount shasta sedge (groups 11g,h)
- Carex subbracteata small-bracted sedge (groups 11d,f,h)
- Carex subfusca rusty or pale broomsedge (groups 11f,g,h)
- Carex subnigricans dark mountain sedge (group 3)
- Carex tahoensis tahoe sedge (group 11d)
- Carex texensis texas sedge (group 9)
- Carex tiogana tioga pass sedge (groups 4,6)
- Carex tompkinsii tompkins' sedge (groups 3,6)
- Carex triquetra trigonous sedge (group 2)
- Carex tumulicola foothill sedge (group 9)
- Carex unilateralis one-sided sedge (group 11f)
- Carex utriculata southern beaked sedge (groups 4,5)
- Carex vallicola western valley sedge (group 9)
- Carex vernacula foetid sedge (group 9)
- Carex vesicaria inflated sedge (group 5)
- Carex viridula green yellow sedge (groups 4,5)
- Carex vulpinoidea brown fox sedge (group 9)
- Carex whitneyi whitney's sedge (group 1)
- Carlowrightia arizonica arizona carlowrightia arizona wrightwort
- Carlquistia muirii muir's tarplant
- Carpenteria californica tree-anemone
- Carpobrotus chilensis sea fig
- Carpobrotus edulis freeway iceplant
- Carthamus creticus smooth distaff thistle
- Carthamus lanatus woolly distaff thistle
- Carthamus leucocaulos whitestem distaff thistle
- Carthamus tinctorius safflower
- Carya illinoinensis pecan
- Cassiope mertensiana white heather
- Castela emoryi emory's crucifixion-thorn
- Castilleja affinis oregon coast paintbrush
- Castilleja affinis tiburon paintbrush
- Castilleja ambigua humboldt bay owl's-clover
- Castilleja ambigua johnny-nip
- Castilleja attenuata valley tassels
- Castilleja brevilobata short-lobed paintbrush
- Castilleja campestris succulent owl's-clover
- Castilleja chromosa desert paintbrush
- Castilleja cinerea ash-gray paintbrush
- Castilleja densiflora san luis obispo owl's-clover
- Castilleja exserta purple owl's-clover
- Castilleja foliolosa woolly paintbrush
- Castilleja gleasoni mount gleason paintbrush
- Castilleja grisea san clemente island paintbrush
- Castilleja hololeuca island paintbrush
- Castilleja lasiorhyncha san bernardino mountains owl's-clover
- Castilleja latifolia monterey coast paintbrush
- Castilleja mendocinensis mendocino coast paintbrush
- Castilleja miniata siskiyou paintbrush
- Castilleja mollis soft-leaved paintbrush
- Castilleja montigena heckard's paintbrush
- Castilleja plagiotoma mojave paintbrush
- Castilleja rubicundula pink creamsacs
- Castilleja rubicundula cream sacs
- Castilleja schizotricha split-hair paintbrush
- Catharanthus roseus madagascar periwinkle
- Caulanthus californicus california jewelflower
- Caulanthus crassicaulis thick-stem wild cabbage
- Caulanthus inflatus desert candle
- Caulanthus lasiophyllus california mustard
- Caulanthus lemmonii lemmon's jewelflower
- Caulanthus pilosus chocolate drops
- Caulanthus simulans payson's jewelflower
- Ceanothus arboreus feltleaf ceanothus
- Ceanothus arcuatus arching ceanothus
- Ceanothus confusus rincon ridge ceanothus
- Ceanothus cordulatus mountain whitethorn
- Ceanothus crassifolius hoaryleaf ceanothus
- Ceanothus cuneatus buckbrush
- Ceanothus cuneatus lompoc ceanothus
- Ceanothus cyaneus lakeside ceanothus
- Ceanothus divergens calistoga ceanothus
- Ceanothus diversifolius pine mat
- Ceanothus ferrisiae coyote ceanothus
- Ceanothus foliosus wavyleaf ceanothus
- Ceanothus foliosus la cuesta ceanothus
- Ceanothus foliosus vine hill ceanothus
- Ceanothus fresnensis fresno ceanothus
- Ceanothus gloriosus glory brush
- Ceanothus gloriosus point reyes ceanothus
- Ceanothus gloriosus mount vision ceanothus
- Ceanothus hearstiorum hearsts' ceanothus
- Ceanothus incanus coast whitethorn
- Ceanothus integerrimus deer brush
- Ceanothus jepsonii musk brush
- Ceanothus leucodermis chaparral whitethorn
- Ceanothus maritimus maritime ceanothus
- Ceanothus masonii mason's ceanothus
- Ceanothus megacarpus island ceanothus
- Ceanothus megacarpus bigpod ceanothus
- Ceanothus oliganthus jim brush
- Ceanothus ophiochilus vail lake ceanothus
- Ceanothus otayensis otay mountain ceanothus
- Ceanothus palmeri palmer ceanothus
- Ceanothus papillosus wartleaf ceanothus
- Ceanothus pinetorum kern ceanothus
- Ceanothus prostratus mahala mat
- Ceanothus pumilus siskiyou mat
- Ceanothus purpureus holly-leaved ceanothus
- Ceanothus roderickii pine hill ceanothus
- Ceanothus sanguineus redstem ceanothus
- Ceanothus sonomensis sonoma ceanothus
- Ceanothus spinosus greenbark ceanothus
- Ceanothus thyrsiflorus carmel ceanothus
- Ceanothus thyrsiflorus blue blossom
- Ceanothus verrucosus wart-stemmed ceanothus
- Ceanothus vestitus mojave ceanothus
- Celtis australis nettle-tree
- Celtis reticulata netleaf hackberry
- Celtis sinensis chinese hackberry
- Cenchrus echinatus southern sandbur
- Cenchrus incertus coastal sandbur common sandbur
- Cenchrus longispinus mat sandbur
- Centaurea benedicta blessed thistle
- Centaurea calcitrapa purple star-thistle
- Centaurea cineraria dusty miller
- Centaurea cyanus bachelor's button cornflower
- Centaurea diffusa diffuse knapweed
- Centaurea diluta north african knapweed
- Centaurea iberica iberian star-thistle
- Centaurea jacea brown knapweed
- Centaurea jacea black knapweed
- Centaurea melitensis tocalote
- Centaurea pouzinii pouzin's star-thistle
- Centaurea solstitialis yellow star-thistle
- Centaurea stoebe spotted knapweed
- Centaurea sulphurea sicilian star-thistle
- Centaurium erythraea european centaury
- Centaurium pulchellum lesser centaury
- Centaurium tenuiflorum slender centaury
- Centranthus ruber red valerian
- Centromadia parryi southern tarplant
- Centromadia parryi congdon's tarplant
- Centromadia parryi pappose tarplant
- Centromadia parryi parry's rough tarplant
- Centromadia pungens smooth tarplant
- Centromadia pungens common spikeweed
- Centrostegia thurberi red triangles
- Cephalanthera austiniae phantom orchid
- Cephalanthus occidentalis california button willow
- Cerastium arvense field mouse-ear chickweed
- Cerastium beeringianum bering mouse-ear chickweed
- Cerastium dichotomum forked mouse-ear chickweed
- Cerastium diffusum dark green mouse-ear chickweed
- Cerastium fontanum common mouse-ear chickweed
- Cerastium glomeratum sticky mouse-ear chickweed
- Cerastium viride western field mouse-ear chickweed
- Cercis occidentalis western redbud
- Cercocarpus betuloides birch-leaf mountain-mahogany
- Cercocarpus betuloides island mountain-mahogany
- Cercocarpus ledifolius curl-leaf mountain-mahogany
- Cercocarpus traskiae catalina island mountain-mahogany
- Chaenactis alpigena sharsmith pincushion
- Chaenactis artemisiifolia white pincushion
- Chaenactis carphoclinia peirson's pincushion
- Chaenactis carphoclinia pebble pincushion
- Chaenactis douglasii alpine dusty-maidens
- Chaenactis douglasii dusty-maidens
- Chaenactis fremontii fremont pincushion
- Chaenactis glabriuscula inner coast range pincushion
- Chaenactis glabriuscula sand buttons
- Chaenactis glabriuscula orcutt's pincushion
- Chaenactis glabriuscula yellow pincushion
- Chaenactis macrantha mojave pincushion
- Chaenactis nevadensis sierra pincushion
- Chaenactis parishii parish's chaenactis
- Chaenactis santolinoides santolina pincushion
- Chaenactis stevioides desert pincushion
- Chaenactis suffrutescens shasta chaenactis
- Chaenactis xantiana fleshy pincushion
- Chaetadelpha wheeleri wheeler's dune-broom
- Chaetopappa ericoides rose-heath
- Chamaebatia australis southern mountain misery
- Chamaebatia foliolosa mountain misery
- Chamaecyparis lawsoniana port orford cedar lawson cypress
- Chamaemelum fuscatum chamomile
- Chamelaucium uncinatum waxflower
- Chamerion angustifolium fireweed
- Chenopodium album lamb's quarters
- Chenopodium berlandieri pitseed goosefoot
- Chenopodium californicum california goosefoot
- Chenopodium capitatum strawberry-blite
- Chenopodium rubrum red pigweed
- Chenopodium simplex large-seeded goosefoot
- Chimaphila menziesii little prince's pine
- Chimaphila umbellata prince's pine
- Chloris gayana rhodes grass
- Chloris truncata black windmill grass
- Chloris verticillata windmill grass
- Chloris virgata feather finger grass
- Chlorogalum grandiflorum red hills soaproot
- Chlorogalum pomeridianum dwarf soaproot
- Chlorogalum purpureum santa lucia purple amole
- Chlorogalum purpureum camatta canyon amole
- Chloropyron maritimum salt marsh bird's-beak
- Chloropyron maritimum point reyes salty bird's-beak
- Chloropyron molle hispid salty bird's-beak
- Chloropyron molle soft salty bird's-beak
- Chloropyron palmatum palmate salty bird's-beak
- Chloropyron tecopense tecopa salty bird's-beak
- Chondrilla juncea skeleton weed
- Chorizanthe angustifolia narrow-leaf spineflower
- Chorizanthe biloba two-lobe spineflower
- Chorizanthe biloba hernandez spineflower
- Chorizanthe blakleyi blakley's spineflower
- Chorizanthe brevicornu brittle spineflower
- Chorizanthe brevicornu great basin brittle spineflower
- Chorizanthe breweri brewer's spineflower
- Chorizanthe clevelandii cleveland's spineflower
- Chorizanthe corrugata wrinkled spineflower
- Chorizanthe cuspidata san francisco bay spineflower
- Chorizanthe cuspidata woolly-headed spineflower
- Chorizanthe diffusa diffuse spineflower
- Chorizanthe douglasii douglas' spineflower
- Chorizanthe fimbriata fringed spineflower
- Chorizanthe fimbriata laciniate spineflower
- Chorizanthe howellii howell's spineflower
- Chorizanthe leptotheca peninsular spineflower
- Chorizanthe membranacea pink spineflower
- Chorizanthe minutiflora fort ord spineflower
- Chorizanthe obovata spoon-sepal spineflower
- Chorizanthe orcuttiana orcutt's spineflower
- Chorizanthe palmeri palmer's spineflower
- Chorizanthe parryi san fernando valley spineflower
- Chorizanthe parryi parry's spineflower
- Chorizanthe polygonoides long-spined spineflower
- Chorizanthe polygonoides knotweed spineflower
- Chorizanthe procumbens prostrate spineflower
- Chorizanthe pungens ben lomond spineflower
- Chorizanthe pungens monterey spineflower
- Chorizanthe rectispina straight-awned spineflower
- Chorizanthe rigida devil's spineflower
- Chorizanthe robusta scotts valley spineflower
- Chorizanthe robusta robust spineflower
- Chorizanthe spinosa mojave spineflower
- Chorizanthe staticoides turkish rugging
- Chorizanthe stellulata starlite spineflower
- Chorizanthe uniaristata one-awn spineflower
- Chorizanthe valida sonoma spineflower
- Chorizanthe ventricosa potbellied spineflower
- Chorizanthe watsonii watson's spineflower
- Chorizanthe wheeleri wheeler's spineflower
- Chorizanthe xanti white-bracted spineflower
- Chorizanthe xanti pinyon spineflower
- Chrysanthemoides monilifera bitou bush
- Chrysolepis chrysophylla giant chinquapin
- Chrysolepis sempervirens bush chinquapin
- Chrysothamnus greenei greene's rabbitbrush
- Chrysothamnus viscidiflorus yellow rabbitbrush
- Chylismia heterochroma shockley's evening-primrose
- Cicendia quadrangularis timwort
- Cicuta maculata bolander's water-hemlock
- Cinna bolanderi bolander's woodreed
- Cinna latifolia drooping woodreed slender woodreed
- Cinnamomum camphora camphor tree
- Cirsium andrewsii franciscan thistle
- Cirsium arizonicum arizona thistle
- Cirsium arizonicum desert mountain thistle
- Cirsium arvense canada thistle
- Cirsium canescens prairie thistle
- Cirsium ciliolatum ashland thistle
- Cirsium crassicaule slough thistle
- Cirsium cymosum gray-green thistle
- Cirsium cymosum peregrine thistle
- Cirsium douglasii swamp thistle
- Cirsium fontinale mount hamilton fountain thistle
- Cirsium fontinale crystal springs fountain thistle
- Cirsium fontinale san luis obispo fountain thistle
- Cirsium fontinale fountain thistle
- Cirsium hydrophilum suisun thistle
- Cirsium hydrophilum mount tamalpais thistle
- Cirsium inamoenum greene's thistle
- Cirsium mohavense mojave thistle
- Cirsium neomexicanum desert thistle
- Cirsium occidentale california thistle
- Cirsium occidentale snowy thistle
- Cirsium occidentale compact cobwebby thistle
- Cirsium occidentale coulter's thistle
- Cirsium occidentale cuesta ridge thistle
- Cirsium occidentale cobwebby thistle
- Cirsium occidentale venus thistle
- Cirsium ochrocentrum yellowspine thistle
- Cirsium praeteriens lost thistle
- Cirsium quercetorum brownie thistle
- Cirsium remotifolium pacific fringed thistle
- Cirsium remotifolium remote-leaved thistle
- Cirsium remotifolium klamath thistle
- Cirsium rhothophilum surf thistle
- Cirsium scariosum dinnerplate thistle
- Cirsium scariosum southern meadow thistle
- Cirsium scariosum rosette thistle
- Cirsium scariosum la graciosa thistle
- Cirsium scariosum shasta valley thistle
- Cirsium scariosum elk thistle
- Cirsium scariosum meadow thistle
- Cirsium undulatum wavyleaf thistle
- Cirsium vulgare bull thistle
- Cissus antarctica kangaroo ivy
- Cistanthe ambigua desert cistanthe
- Cistanthe maritima seaside cistanthe
- Cistus ladanifer gum cistus
- Citrullus lanatus wild watermelon
- Cladium californicum california sawgrass
- Clarkia amoena whitney's farewell-to-spring
- Clarkia amoena farewell-to-spring
- Clarkia australis small's southern clarkia
- Clarkia biloba mariposa clarkia
- Clarkia biloba brandegee's clarkia
- Clarkia borealis shasta clarkia
- Clarkia borealis northern clarkia
- Clarkia bottae punchbowl godetia
- Clarkia breweri brewer's clarkia
- Clarkia concinna santa clara red ribbons
- Clarkia concinna raiche's red ribbons
- Clarkia concinna red ribbons
- Clarkia delicata delicate clarkia
- Clarkia exilis slender clarkia
- Clarkia franciscana presidio clarkia
- Clarkia gracilis white-stemmed clarkia
- Clarkia gracilis tracy's clarkia
- Clarkia imbricata vine hill clarkia
- Clarkia jolonensis jolon clarkia
- Clarkia lewisii lewis' clarkia
- Clarkia lingulata merced clarkia
- Clarkia mildrediae golden-anthered clarkia
- Clarkia mildrediae mildred's clarkia
- Clarkia mosquinii mosquin's clarkia
- Clarkia purpurea four-spot
- Clarkia rostrata beaked clarkia
- Clarkia speciosa pismo clarkia
- Clarkia springvillensis springville clarkia
- Clarkia tembloriensis vasek's clarkia
- Clarkia virgata sierra clarkia
- Clarkia xantiana kern canyon clarkia
- Claytonia lanceolata western spring beauty
- Claytonia megarhiza fell-fields claytonia
- Claytonia palustris marsh claytonia
- Claytonia parviflora streambank spring beauty
- Claytonia perfoliata miner's lettuce
- Claytonia sibirica candy flower
- Claytonia umbellata great basin claytonia
- Clematis lasiantha chaparral clematis pipestem clematis
- Clematis ligusticifolia western virgin's bower
- Clematis pauciflora southern california clematis few-flowered clematis
- Cleomella brevipes short-pedicelled cleomella
- Cleomella hillmanii hillman's cleomella
- Cleomella obtusifolia mojave stinkweed
- Clinopodium chandleri san miguel savory
- Clinopodium douglasii yerba buena
- Clinopodium mimuloides monkey-flower savory
- Cneoridium dumosum bushrue
- Cochlearia groenlandica greenland cochlearia
- Coincya monensis star mustard
- Collinsia antonina san antonio collinsia
- Collinsia corymbosa round-headed chinese-houses
- Collinsia heterophylla downy chinese-houses
- Collinsia heterophylla chinese-houses
- Collinsia multicolor san francisco collinsia
- Collinsia parviflora blue-eyed mary
- Collomia diversifolia serpentine collomia
- Collomia grandiflora large-flowered collomia
- Collomia heterophylla variable-leaf collomia
- Collomia larsenii talus collomia
- Collomia linearis narrow-leaf mountain trumpet
- Collomia rawsoniana rawson's flaming-trumpet
- Collomia tenella slender collomia
- Collomia tinctoria staining collomia
- Collomia tracyi tracy's collomia
- Colubrina californica las animas colubrina
- Comarostaphylis diversifolia summer holly
- Comarum palustre marsh cinquefoil
- Comastoma tenellum samiland gentian
- Commelina benghalensis tropical spiderwort
- Condalia globosa spiny abrojo
- Condea emoryi desert lavender
- Conicosia pugioniformis narrowleaf iceplant
- Constancea nevinii nevin's woolly sunflower
- Convolvulus arvensis bindweed orchard morning-glory
- Convolvulus simulans small-flowered morning-glory
- Coprosma repens mirror bush
- Coptis laciniata oregon goldthread
- Corallorhiza maculata spotted coralroot
- Corallorhiza mertensiana western coralroot
- Corallorhiza striata striped coralroot
- Corallorhiza trifida northern coralroot
- Cordylanthus capitatus yakima bird's-beak
- Cordylanthus eremicus desert bird's-beak
- Cordylanthus eremicus kern plateau bird's-beak
- Cordylanthus nidularius mount diablo bird's-beak
- Cordylanthus parviflorus small-flowered bird's-beak
- Cordylanthus rigidus short-bracted bird's-beak
- Cordylanthus rigidus seaside bird's-beak
- Cordylanthus tenuis fresno county bird's-beak
- Cordylanthus tenuis serpentine bird's-beak
- Cordylanthus tenuis pennell's bird's-beak
- Cordylanthus tenuis pallid bird's-beak
- Cordyline australis new zealand cabbage tree
- Coreopsis lanceolata garden coreopsis
- Coreopsis tinctoria calliopsis
- Coriandrum sativum coriander cilantro
- Corispermum americanum american bugseed
- Cornus canadensis bunchberry
- Cornus glabrata brown dogwood
- Cornus nuttallii mountain dogwood
- Cornus sericea american dogwood
- Coronilla varia crown vetch
- Cortaderia jubata purple pampas grass jubata grass
- Cortaderia selloana pampas grass
- Corydalis aurea golden corydalis
- Corydalis caseana sierra corydalis fitweed
- Corylus cornuta california hazel
- Coryphantha alversonii foxtail cactus
- Coryphantha chlorantha desert pincushion
- Coryphantha vivipara viviparous foxtail cactus
- Cosmos bipinnatus garden cosmos
- Cota tinctoria golden marguerite
- Cotoneaster franchetii franchet's cotoneaster
- Cotoneaster frigidus tree cotoneaster
- Cotoneaster hodjingensis earthquake cotoneaster
- Cotoneaster horizontalis wall or herringbone cotoneaster
- Cotoneaster integrifolius entire-leaved cotoneaster
- Cotoneaster lacteus late cotoneaster
- Cotoneaster pannosus silverleaf cotoneaster
- Cotoneaster simonsii himalayan cotoneaster
- Cotula australis australian cotula
- Cotula coronopifolia brass-buttons
- Crassula connata pygmy-weed
- Crassula multicava fairy crassula
- Crassula ovata jade plant
- Crassula tetragona miniature or chinese pine-tree
- Crepis runcinata hall's meadow hawksbeard
- Cressa truxillensis alkali weed
- Crocanthemum aldersonii alderson's rush-rose
- Crocanthemum greenei island rush-rose
- Crocanthemum scoparium peak rush-rose
- Crocanthemum suffrutescens bisbee peak rush-rose
- Crossosoma californicum catalina crossosoma
- Croton setiger turkey-mullein
- Croton wigginsii wiggins' croton
- Crupina vulgaris bearded creeper
- Crypsis alopecuroides foxtail prickle grass
- Crypsis schoenoides swamp prickle grass
- Crypsis vaginiflora modest prickle grass
- Cryptantha affinis side-grooved cryptantha
- Cryptantha ambigua wilkes' cryptantha
- Cryptantha angustifolia narrow-leaved cryptantha
- Cryptantha barbigera bearded cryptantha
- Cryptantha barbigera palm springs cryptantha
- Cryptantha celosioides cocks-comb cat's-eye
- Cryptantha cinerea bow-nut cryptantha
- Cryptantha circumscissa cushion cryptantha
- Cryptantha circumscissa rosette cushion cryptantha
- Cryptantha clevelandii cleveland's cryptantha
- Cryptantha clevelandii coastal cryptantha
- Cryptantha clokeyi clokey's cryptantha
- Cryptantha confertiflora yellow-flowered cryptantha
- Cryptantha corollata coast range cryptantha
- Cryptantha costata ribbed cryptantha
- Cryptantha crinita silky cryptantha
- Cryptantha crymophila subalpine cryptantha
- Cryptantha decipiens gravel cryptantha
- Cryptantha dissita lake cryptantha
- Cryptantha dumetorum scrambling cryptantha
- Cryptantha echinella hedgehog cryptantha
- Cryptantha excavata deep-scarred cryptantha
- Cryptantha fendleri sand dune cryptantha
- Cryptantha flaccida weak-stemmed or pale cryptantha
- Cryptantha flavoculata yellow-eyed cryptantha
- Cryptantha ganderi gander's cryptantha
- Cryptantha glomeriflora clustered-flower cryptantha
- Cryptantha gracilis slender cryptantha
- Cryptantha hispidula napa cryptantha
- Cryptantha hoffmannii white mountains cryptantha
- Cryptantha holoptera winged cryptantha
- Cryptantha hooveri hoover's cryptantha
- Cryptantha humilis low cryptantha
- Cryptantha inaequata panamint cryptantha
- Cryptantha incana tulare cryptantha
- Cryptantha intermedia henderson's cryptantha
- Cryptantha leiocarpa beach cryptantha
- Cryptantha mariposae mariposa cryptantha
- Cryptantha maritima guadalupe cryptantha
- Cryptantha micrantha mountain red-root cryptantha
- Cryptantha micrantha red-root cryptantha
- Cryptantha micromeres minute-flowered cryptantha
- Cryptantha microstachys tejon cryptantha
- Cryptantha milobakeri milo baker's cryptantha
- Cryptantha mohavensis mojave cryptantha
- Cryptantha muricata prickly-nut cryptantha
- Cryptantha muricata jones' cryptantha
- Cryptantha muricata showy prickly-nut cryptantha
- Cryptantha nemaclada colusa cryptantha
- Cryptantha nevadensis nevada cryptantha
- Cryptantha nevadensis rigid cryptantha
- Cryptantha nubigena sierra cryptantha
- Cryptantha oxygona sharp-nut cryptantha
- Cryptantha pterocarya tucson cryptantha
- Cryptantha pterocarya winged-nut cryptantha
- Cryptantha pterocarya purpus' cryptantha
- Cryptantha racemosa shrubby cryptantha
- Cryptantha rattanii rattan's cryptantha
- Cryptantha recurvata curved-nut cryptantha
- Cryptantha roosiorum bristlecone cryptantha
- Cryptantha rostellata red-stemmed cryptantha
- Cryptantha schoolcraftii schoolcraft's cryptantha
- Cryptantha scoparia gray cryptantha
- Cryptantha similis dome cryptantha
- Cryptantha simulans pine cryptantha
- Cryptantha sparsiflora few-flowered cryptantha
- Cryptantha subretusa crater lake cryptantha
- Cryptantha torreyana dwarf cryptantha
- Cryptantha torreyana torrey's cryptantha
- Cryptantha traskiae trask's cryptantha
- Cryptantha tumulosa new york mountains cryptantha
- Cryptantha utahensis scented cryptantha
- Cryptantha virginensis virgin river cryptantha
- Cryptantha watsonii watson's cryptantha
- Cryptogramma acrostichoides american parsley fern
- Cryptogramma cascadensis cascade parsley fern
- Cucumis melo dudaim melon
- Cucumis myriocarpus paddy melon
- Cucurbita digitata finger-leaved gourd
- Cucurbita foetidissima buffalo gourd calabazilla
- Cucurbita palmata coyote melon
- Cucurbita pepo calabaza field pumpkin
- Cuscuta approximata alfalfa dodder
- Cuscuta californica chaparral dodder
- Cuscuta campestris field dodder
- Cuscuta cephalanthi buttonbush dodder
- Cuscuta denticulata small-tooth dodder
- Cuscuta howelliana boggs lake dodder
- Cuscuta indecora large-seeded dodder
- Cuscuta japonica japanese dodder
- Cuscuta pacifica goldenthread
- Cuscuta reflexa giant dodder
- Cuscuta salina salt dodder
- Cuscuta suaveolens fringed dodder
- Cuscuta suksdorfii mountain dodder
- Cusickiella quadricostata bodie hills cusickiella
- Cylindropuntia acanthocarpa buckhorn cholla
- Cylindropuntia bigelovii teddy-bear cholla
- Cylindropuntia californica snake cholla
- Cylindropuntia californica cane or valley cholla
- Cylindropuntia chuckwallensis chuckwalla cholla
- Cylindropuntia echinocarpa silver or golden cholla
- Cylindropuntia fosbergii fosberg's or mason valley cholla
- Cylindropuntia ganderi gander's cholla
- Cylindropuntia munzii munz's cholla
- Cylindropuntia prolifera coast cholla
- Cylindropuntia ramosissima diamond cholla pencil cactus
- Cylindropuntia wolfii wolf's cholla
- Cymbalaria muralis kenilworth ivy
- Cymopterus deserticola desert cymopterus
- Cymopterus gilmanii gilman's cymopterus
- Cymopterus globosus globose cymopterus
- Cymopterus multinervatus purple-nerve cymopterus
- Cymopterus ripleyi ripley's cymopterus
- Cynara cardunculus artichoke
- Cynodon dactylon bermuda grass
- Cynoglossum grande grand hound's tongue
- Cynoglossum occidentale western hound's tongue
- Cynoglossum officinale common hound's tongue
- Cynosurus cristatus crested dogtail grass
- Cynosurus echinatus bristly dogtail grass
- Cyperus rotundus purple nutsedge
- Cyperus strigosus false nutsedge
- Cypripedium californicum california lady's-slipper
- Cypripedium fasciculatum clustered lady's-slipper
- Cypripedium montanum mountain lady's-slipper
- Cypripedium parviflorum northern small yellow lady's-slipper
- Cytisus multiflorus spanish or portuguese broom
- Cytisus proliferus tree lucerne
- Cytisus scoparius scotch broom
- Dactyloctenium aegyptium durban crowfoot
- Dalea ornata ornate dalea
- Danthonia californica california oat grass
- Danthonia decumbens mountain heath grass
- Danthonia intermedia intermediate oat grass
- Danthonia unispicata one-spike oat grass
- Dasiphora fruticosa shrubby cinquefoil
- Datisca glomerata durango root
- Daucus carota carrot queen anne's lace
- Dedeckera eurekensis july gold
- Deinandra arida red rock tarplant
- Deinandra bacigalupii livermore tarplant
- Deinandra clementina island tarplant
- Deinandra conjugens otay tarplant
- Deinandra floribunda tecate tarplant
- Deinandra halliana hall's tarplant
- Deinandra increscens gaviota tarplant
- Deinandra minthornii santa susana tarplant
- Deinandra mohavensis mojave tarplant
- Deinandra paniculata paniculate tarplant
- Delphinium andersonii anderson's larkspur
- Delphinium antoninum anthony peak larkspur
- Delphinium bakeri baker's larkspur
- Delphinium californicum coast or california larkspur
- Delphinium californicum hospital canyon larkspur
- Delphinium cardinale cardinal or scarlet larkspur
- Delphinium decorum coast larkspur
- Delphinium decorum tracy's larkspur
- Delphinium depauperatum dwarf blue mountain or mountain larkspur
- Delphinium glaucum mountain giant or tall larkspur
- Delphinium gracilentum slender or greene's larkspur
- Delphinium gypsophilum gypsum-loving larkspur
- Delphinium hansenii ewan's larkspur
- Delphinium hansenii hansen's larkspur
- Delphinium hansenii kern county larkspur
- Delphinium hesperium cuyamaca larkspur
- Delphinium hesperium western larkspur
- Delphinium hesperium pale-flowered western larkspur
- Delphinium hutchinsoniae hutchinson's larkspur
- Delphinium inopinum unexpected larkspur
- Delphinium luteum golden larkspur
- Delphinium nudicaule red or orange larkspur
- Delphinium nuttallianum dwarf meadow slim or sonne's larkspur
- Delphinium parishii pale-flowered parish's larkspur
- Delphinium parishii parish's desert sky blue or mojave larkspur
- Delphinium parishii colorado desert larkspur
- Delphinium parryi dune larkspur
- Delphinium parryi eastwood's larkspur
- Delphinium parryi maritime larkspur
- Delphinium parryi parry's larkspur
- Delphinium parryi mount pinos larkspur
- Delphinium patens spreading or zigzag larkspur
- Delphinium polycladon high mountain larkspur
- Delphinium purpusii rose-flowered larkspur
- Delphinium recurvatum recurved larkspur
- Delphinium scaposum bare-stem larkspur
- Delphinium stachydeum spiked larkspur
- Delphinium trolliifolium cow poison poison larkspur
- Delphinium uliginosum swamp larkspur
- Delphinium umbraculorum umbrella larkspur
- Delphinium variegatum san clemente island larkspur
- Delphinium variegatum thorne's royal larkspur
- Delphinium variegatum royal larkspur
- Dendromecon harfordii channel island tree poppy
- Dendromecon rigida bush poppy
- Deschampsia cespitosa tufted hair grass
- Deschampsia danthonioides annual hair grass
- Deschampsia elongata slender hair grass
- Dianthus armeria grass pink deptford pink
- Dianthus barbatus sweet-william
- Dianthus deltoides maiden pink meadow pink
- Dianthus plumarius garden or cottage pink
- Dicentra formosa pacific bleeding heart
- Dicentra nevadensis tulare county bleeding heart
- Dicentra uniflora steer's head
- Dichelostemma capitatum blue dicks
- Dichelostemma congestum fork-toothed ookow
- Dichelostemma ida-maia firecracker flower
- Dichelostemma multiflorum wild hyacinth
- Dichelostemma volubile twining brodiaea snake lily
- Dichondra occidentalis western dichondra
- Dicranostegia orcuttiana orcutt's bird's-beak baja bird's-beak
- Dieteria asteroides mount laguna aster
- Dieteria canescens ziegler's aster
- Dieteria canescens hoary-aster
- Digitaria californica arizona cottontop
- Digitaria ciliaris southern crab grass
- Digitaria ischaemum smooth crab grass
- Digitaria sanguinalis hairy crab grass
- Dimeresia howellii doublet
- Dimorphotheca ecklonis blue & white daisybush
- Dimorphotheca fruticosa trailing african daisy
- Dimorphotheca sinuata namaqualand daisy
- Diodia teres rough buttonweed poor joe
- Dipsacus fullonum wild teasel
- Dipsacus sativus fuller's teasel
- Dirca occidentalis western leatherwood
- Dissanthelium californicum california dissanthelium
- Distichlis littoralis shore grass
- Distichlis spicata salt grass
- Ditaxis claryana glandular ditaxis
- Ditaxis serrata california ditaxis
- Dithyrea maritima beach spectaclepod
- Dittrichia graveolens stinkwort
- Dittrichia viscosa false yellowhead
- Dodecahema leptoceras slender-horned spineflower
- Downingia concolor cuyamaca lake downingia
- Downingia laeta great basin downingia
- Downingia pusilla dwarf downingia
- Draba aureola golden alpine draba
- Draba californica california draba
- Draba cana canescent draba
- Draba carnosula mount eddy draba
- Draba cruciata mineral king draba
- Draba howellii howell's draba
- Draba incrassata sweetwater mountains draba
- Draba lonchocarpa spear-fruited draba
- Draba monoensis white mountains draba
- Draba praealta tall draba
- Draba pterosperma winged-seed draba
- Draba saxosa southern california rock draba
- Draba sharsmithii mount whitney draba
- Draba sierrae sierra draba
- Draba subumbellata mound draba
- Drosera anglica english sundew
- Drosera rotundifolia round-leaved sundew
- Drymocallis cuneifolia wedgeleaf woodbeauty
- Drymocallis cuneifolia ewan's woodbeauty
- Drymocallis hansenii yosemite woodbeauty
- Drymocallis lactea austin's woodbeauty
- Drymocallis lactea sierran woodbeauty
- Drymocallis pseudorupestris crum's woodbeauty
- Drymocallis pseudorupestris cliff woodbeauty
- Dryopteris filix-mas male fern
- Duchesnea indica mock-strawberry
- Dudleya abramsii san bernardino mountains dudleya
- Dudleya abramsii betty's dudleya
- Dudleya abramsii limestone dudleya
- Dudleya abramsii mouse-gray dudleya
- Dudleya abramsii santa clara valley dudleya
- Dudleya blochmaniae blochman's dudleya
- Dudleya blochmaniae santa rosa island dudleya
- Dudleya brevifolia shortleaved dudleya
- Dudleya candelabrum candleholder dudleya
- Dudleya cymosa agoura hills dudleya
- Dudleya cymosa pierpoint springs dudleya
- Dudleya cymosa san gabriel river dudleya
- Dudleya cymosa marcescent dudleya
- Dudleya cymosa santa monica dudleya
- Dudleya densiflora san gabriel mountains dudleya
- Dudleya farinosa bluff lettuce
- Dudleya gnoma munchkin dudleya
- Dudleya greenei greene's dudleya
- Dudleya lanceolata lance-leaved dudleya
- Dudleya multicaulis many-stemmed dudleya
- Dudleya nesiotica santa cruz island dudleya
- Dudleya palmeri palmer's dudleya
- Dudleya parva conejo dudleya
- Dudleya pulverulenta chalk dudleya
- Dudleya saxosa panamint dudleya
- Dudleya stolonifera laguna beach dudleya
- Dudleya traskiae santa barbara island dudleya
- Dudleya variegata variegated dudleya
- Dudleya verityi verity's dudleya
- Dudleya virens island green dudleya
- Dudleya virens bright green dudleya
- Dudleya viscida sticky dudleya
- Dulichium arundinaceum three-way sedge
- Dysphania ambrosioides mexican tea
- Dysphania anthelmintica wormseed
- Dysphania botrys jerusalem oak
- Dyssodia papposa dogweed
- Echium candicans pride of madeira
- Echium pininana tower of jewels
- Echium plantagineum salvation jane
- Eclipta prostrata false daisy
- Ehrendorferia chrysantha golden eardrops
- Ehrendorferia ochroleuca white eardrops
- Ehrharta calycina perennial veldt grass
- Ehrharta erecta panic veldt grass
- Ehrharta longiflora long-flowered veldt grass annual veldt grass
- Elaeagnus angustifolia russian olive
- Eleocharis acicularis needle spikerush
- Eleocharis parvula small spikerush
- Eleocharis quadrangulata squarestem spikerush
- Eleocharis torticulmis california twisted spikerush
- Eleusine coracana african finger millet
- Eleusine indica goose grass india goose grass
- Eleusine tristachya three-spiked goose grass
- Elodea bifoliata two-leaf waterweed
- Elodea canadensis common waterweed
- Elodea nuttallii nuttall's waterweed
- Elymus californicus california bottle-brush grass
- Elymus caput-medusae medusa head
- Elymus cinereus great basin wild-rye
- Elymus condensatus giant wild-rye
- Elymus elymoides squirreltail
- Elymus glaucus blue or western wild-rye
- Elymus lanceolatus thick-spike wheat grass
- Elymus mollis american dune grass sea lyme grass
- Elymus multisetus big squirreltail
- Elymus pacificus pacific wild-rye
- Elymus ponticus tall wheat grass
- Elymus repens quack grass
- Elymus salina salina pass wild-rye
- Elymus scribneri scribner's wheat grass
- Elymus smithii western wheat grass
- Elymus spicatus blue bunch wheat grass
- Elymus stebbinsii stebbins' wheat grass
- Elymus trachycaulus slender wheat grass
- Elymus triticoides beardless wild rye
- Emex australis southern three-cornered jack
- Emex spinosa devil's thorn
- Emmenanthe penduliflora whispering bells
- Empetrum nigrum black crowberry
- Encelia farinosa brittlebush
- Enceliopsis covillei panamint daisy
- Enceliopsis nudicaulis naked-stemmed daisy
- Enemion occidentale western rue-anemone
- Enemion stipitatum siskiyou rue-anemone
- Enneapogon desvauxii nine-awned pappus grass
- Ephedra aspera boundary ephedra
- Ephedra californica desert tea
- Ephedra funerea death valley ephedra
- Ephedra nevadensis nevada ephedra
- Ephedra trifurca longleaf ephedra
- Ephedra viridis green ephedra
- Epilobium canum california fuchsia zauschneria
- Epilobium howellii subalpine fireweed
- Epilobium luteum yellow willowherb
- Epilobium nivium snow mountain willowherb
- Epilobium oreganum oregon fireweed
- Epilobium palustre marsh willowherb
- Epilobium rigidum siskiyou mountains willowherb
- Epilobium septentrionale humboldt county fuchsia
- Epilobium siskiyouense siskiyou fireweed
- Epipactis gigantea stream orchid
- Epipactis helleborine broad-leaved helleborine
- Equisetum ×ferrissii ferriss' horsetail
- Equisetum arvense common horsetail
- Equisetum hyemale common scouring rush
- Equisetum laevigatum smooth scouring rush
- Equisetum palustre marsh horsetail
- Equisetum telmateia giant horsetail
- Eragrostis barrelieri mediterranean love grass
- Eragrostis cilianensis stink grass
- Eragrostis curvula weeping love grass
- Eragrostis hypnoides creeping love grass
- Eragrostis lehmanniana lehmann's love grass
- Eragrostis lutescens six-weeks love grass
- Eragrostis mexicana mexican love grass
- Eragrostis mexicana chilean love grass
- Eragrostis minor little love grass
- Eragrostis pectinacea gulf love grass
- Eragrostis pectinacea carolina love grass
- Eremalche exilis white mallow
- Eremalche parryi kern mallow
- Eremalche parryi parry's mallow
- Eremalche rotundifolia desert fivespot
- Eremogone aculeata prickly sandwort
- Eremogone cliftonii clifton's eremogone clifton's sandwort
- Eremogone congesta charleston sandwort
- Eremogone congesta suffrutescent sandwort
- Eremogone congesta ballhead sandwort
- Eremogone ferrisiae ferris' sandwort
- Eremogone kingii king's sandwort
- Eremogone macradenia mojave or desert sandwort
- Eremogone ursina bear valley sandwort
- Eremothera boothii pine creek evening-primrose
- Eremothera boothii booth's evening-primrose
- Eremothera boothii shredding evening-primrose
- Eremothera boothii booth's hairy evening-primrose
- Eremothera minor nelson's evening-primrose
- Eriastrum brandegeeae brandegee's eriastrum
- Eriastrum densifolium santa ana river woollystar
- Eriastrum hooveri hoover's eriastrum
- Eriastrum luteum yellow-flowered eriastrum
- Eriastrum pluriflorum many-flowered eriastrum
- Eriastrum tracyi tracy's eriastrum
- Eriastrum virgatum virgate eriastrum
- Ericameria albida white-flowered rabbitbrush
- Ericameria arborescens golden-fleece
- Ericameria bloomeri bloomer's goldenbush
- Ericameria brachylepis boundary goldenbush
- Ericameria cooperi cooper's goldenbush
- Ericameria cuneata cliff goldenbush
- Ericameria cuneata laguna mountains goldenbush
- Ericameria cuneata wedgeleaf goldenbush
- Ericameria discoidea whitestem goldenbush
- Ericameria ericoides mock heather california goldenbush
- Ericameria fasciculata eastwood's goldenbush
- Ericameria gilmanii gilman's goldenbush
- Ericameria greenei greene's goldenbush
- Ericameria laricifolia turpentine-brush
- Ericameria linearifolia interior goldenbush
- Ericameria nana dwarf goldenbush
- Ericameria nauseosa bernardina rabbitbrush
- Ericameria nauseosa desert rabbitbrush
- Ericameria nauseosa white rabbitbrush
- Ericameria nauseosa smooth-fruit rabbitbrush
- Ericameria nauseosa mojave rabbitbrush
- Ericameria nauseosa great basin rabbitbrush
- Ericameria nauseosa showy rabbitbrush
- Ericameria nauseosa washoe rabbitbrush
- Ericameria nauseosa rubber rabbitbrush
- Ericameria ophitidis serpentine goldenbush
- Ericameria palmeri thickbracted goldenbush
- Ericameria palmeri palmer's goldenbush
- Ericameria paniculata black-banded rabbitbrush
- Ericameria parishii parish's goldenbush
- Ericameria parryi rough rabbitbrush
- Ericameria parryi low rabbitbrush
- Ericameria parryi wideleaf rabbitbrush
- Ericameria parryi one-headed rabbitbrush
- Ericameria parryi nevada rabbitbrush
- Ericameria parryi vulcan rabbitbrush
- Ericameria parryi parry's goldenbush
- Ericameria pinifolia pine-bush
- Ericameria suffruticosa singlehead goldenbush
- Ericameria teretifolia green or round-leaf rabbitbrush
- Erigeron aequifolius hall's daisy
- Erigeron algidus sierra fleabane
- Erigeron aliceae alice eastwood's fleabane
- Erigeron annuus annual fleabane
- Erigeron aphanactis rayless shaggy fleabane
- Erigeron argentatus silver fleabane
- Erigeron barbellulatus shining fleabane
- Erigeron biolettii streamside daisy
- Erigeron blochmaniae blochman's leafy daisy
- Erigeron bloomeri waldo daisy
- Erigeron bloomeri bloomer's fleabane
- Erigeron bonariensis flax-leaved horseweed
- Erigeron breweri san jacinto mountains daisy
- Erigeron breweri brewer's fleabane
- Erigeron calvus bald daisy
- Erigeron canadensis horseweed
- Erigeron cervinus siskiyou daisy
- Erigeron chrysopsidis dwarf yellow fleabane
- Erigeron clokeyi pinzl's fleabane
- Erigeron compactus compact daisy
- Erigeron compositus cut-leaf fleabane
- Erigeron concinnus navajo fleabane
- Erigeron coulteri coulter's fleabane
- Erigeron divergens spreading fleabane
- Erigeron eatonii nevada daisy
- Erigeron eatonii eaton's fleabane
- Erigeron elegantulus volcanic daisy
- Erigeron elmeri elmer's fleabane
- Erigeron filifolius thread-leaf fleabane
- Erigeron flagellaris trailing fleabane
- Erigeron foliosus leafy fleabane
- Erigeron glacialis subalpine fleabane
- Erigeron glaucus seaside daisy
- Erigeron greenei greene's narrow-leaved daisy
- Erigeron inornatus hot rock daisy
- Erigeron inornatus keil's daisy
- Erigeron inornatus western rayless fleabane
- Erigeron karvinskianus santa barbara daisy
- Erigeron klamathensis klamath fleabane
- Erigeron lassenianus lassen fleabane
- Erigeron linearis desert yellow fleabane
- Erigeron lonchophyllus short-rayed fleabane
- Erigeron maniopotamicus mad river fleabane daisy
- Erigeron mariposanus mariposa daisy
- Erigeron miser starved daisy
- Erigeron multiceps kern river daisy
- Erigeron nivalis snow fleabane daisy
- Erigeron oxyphyllus wand-like fleabane daisy
- Erigeron parishii parish's daisy
- Erigeron petrophilus northern sierra daisy
- Erigeron petrophilus klamath rock daisy
- Erigeron petrophilus rock-loving fleabane
- Erigeron philadelphicus philadelphia fleabane
- Erigeron pumilus shaggy fleabane
- Erigeron pygmaeus pygmy fleabane
- Erigeron reductus california rayless daisy
- Erigeron reductus little rayless fleabane
- Erigeron robustior robust daisy
- Erigeron sanctarum saints' daisy
- Erigeron serpentinus serpentine daisy
- Erigeron strigosus prairie fleabane
- Erigeron sumatrensis tropical horseweed
- Erigeron supplex supple daisy
- Erigeron tener thin daisy
- Erigeron uncialis limestone daisy
- Erigeron utahensis utah daisy
- Erigeron vagus rambling fleabane
- Eriochloa acuminata southwestern cup grass summer grass
- Eriochloa aristata awned cup grass
- Eriochloa contracta prairie cup grass
- Eriodictyon altissimum indian knob mountainbalm
- Eriodictyon angustifolium narrow-leaved yerba santa
- Eriodictyon californicum california yerba santa
- Eriodictyon capitatum lompoc yerba santa
- Eriodictyon crassifolium thick-leaved yerba santa
- Eriodictyon crassifolium bicolored yerba santa
- Eriodictyon lobbii matted yerba santa
- Eriodictyon parryi poodle-dog bush
- Eriodictyon tomentosum woolly yerba santa
- Eriodictyon traskiae smith's yerba santa
- Eriodictyon traskiae trask's yerba santa
- Eriodictyon trichocalyx san diego yerba santa
- Eriodictyon trichocalyx hairy yerba santa
- Eriogonum alpinum trinity buckwheat (group 3)
- Eriogonum ampullaceum mono wild buckwheat (group 1)
- Eriogonum angulosum angle-stem wild buckwheat (group 2)
- Eriogonum apiculatum san jacinto wild buckwheat (group 2)
- Eriogonum apricum ione buckwheat
- Eriogonum apricum irish hill buckwheat
- Eriogonum arborescens santa cruz island wild buckwheat (group 4)
- Eriogonum argillosum clay buckwheat (group 1)
- Eriogonum baileyi bailey's wild buckwheat
- Eriogonum baileyi bailey's woolly buckwheat
- Eriogonum bifurcatum forked buckwheat (group 2)
- Eriogonum brachyanthum short-flower wild buckwheat (group 1)
- Eriogonum brachypodum parry's wild buckwheat (group 2)
- Eriogonum breedlovei breedlove's buckwheat
- Eriogonum breedlovei the needles buckwheat
- Eriogonum butterworthianum butterworth's buckwheat (group 4)
- Eriogonum caespitosum matted wild buckwheat (group 3)
- Eriogonum callistum tehachapi buckwheat (group 4)
- Eriogonum cedrorum the cedars buckwheat (group 3)
- Eriogonum cernuum nodding wild buckwheat (group 2)
- Eriogonum cinereum coastal wild buckwheat (group 4)
- Eriogonum cithariforme santa ynez wild buckwheat
- Eriogonum cithariforme cithara wild buckwheat
- Eriogonum clavatum hoover's desert trumpet (group 2)
- Eriogonum collinum hill buckwheat (group 2)
- Eriogonum compositum arrow-leaf wild buckwheat (group 3)
- Eriogonum congdonii congdon's buckwheat (group 3)
- Eriogonum contiguum reveal's buckwheat (group 2)
- Eriogonum covilleanum coville's wild buckwheat (group 1)
- Eriogonum crocatum conejo buckwheat (group 4)
- Eriogonum dasyanthemum chaparral wild buckwheat (group 1)
- Eriogonum davidsonii davidson's wild buckwheat (group 1)
- Eriogonum deflexum tall skeleton weed
- Eriogonum deflexum flat-topped skeleton weed
- Eriogonum deflexum nevada skeleton weed
- Eriogonum deflexum skeleton weed (group 2)
- Eriogonum deserticola colorado desert wild buckwheat (group 4)
- Eriogonum diclinum jaynes canyon buckwheat (group 3)
- Eriogonum douglasii southern wild buckwheat (group 3)
- Eriogonum eastwoodianum eastwood's buckwheat (group 1)
- Eriogonum elatum tall wild buckwheat
- Eriogonum elatum tall woolly wild buckwheat
- Eriogonum elegans elegant wild buckwheat (group 1)
- Eriogonum elongatum long-stem wild buckwheat (group 4)
- Eriogonum eremicola wildrose canyon buckwheat (group 2)
- Eriogonum esmeraldense esmeralda wild buckwheat (group 2)
- Eriogonum evanidum vanishing wild buckwheat (group 1)
- Eriogonum exaltatum ladder wild buckwheat (group 2)
- Eriogonum fasciculatum coastal california buckwheat
- Eriogonum fasciculatum sonoran desert california buckwheat
- Eriogonum fasciculatum leafy california buckwheat
- Eriogonum fasciculatum mojave desert california buckwheat
- Eriogonum fasciculatum california buckwheat (group 4)
- Eriogonum giganteum santa barbara island buckwheat
- Eriogonum giganteum san clemente island buckwheat
- Eriogonum giganteum santa catalina island buckwheat
- Eriogonum giganteum st. catherine's-lace (group 4)
- Eriogonum gilmanii gilman's buckwheat (group 4)
- Eriogonum glandulosum glandular wild buckwheat (group 2)
- Eriogonum gossypinum cottony buckwheat (group 2)
- Eriogonum gracile slender woolly wild buckwheat
- Eriogonum gracile palomar mountain wild buckwheat
- Eriogonum gracilipes white mountains wild buckwheat (group 4)
- Eriogonum gracillimum rose-and-white wild buckwheat (group 2)
- Eriogonum grande island buckwheat
- Eriogonum grande red-flowered buckwheat
- Eriogonum grande san nicolas island buckwheat
- Eriogonum heermannii heermann's rough wild buckwheat
- Eriogonum heermannii clark mountain buckwheat
- Eriogonum heermannii heermann's wild buckwheat
- Eriogonum heermannii heermann's great basin wild buckwheat
- Eriogonum heermannii western heermann's buckwheat
- Eriogonum heermannii heermann's grooved wild buckwheat
- Eriogonum heracleoides parsnip-flowered buckwheat (group 3)
- Eriogonum hirtellum klamath mountain buckwheat (group 3)
- Eriogonum hirtiflorum hairy-flower wild buckwheat (group 2)
- Eriogonum hoffmannii hoffmann's buckwheat
- Eriogonum hoffmannii robust hoffmann's buckwheat
- Eriogonum hookeri hooker's wild buckwheat (group 2)
- Eriogonum incanum frosted wild buckwheat (group 3)
- Eriogonum inerme goodman's unarmed wild buckwheat
- Eriogonum inerme unarmed wild buckwheat
- Eriogonum inflatum desert trumpet (groups 2 4)
- Eriogonum intrafractum jointed buckwheat (group 4)
- Eriogonum kelloggii kellogg's buckwheat (group 3)
- Eriogonum kennedyi southern alpine buckwheat
- Eriogonum kennedyi southern mountain buckwheat
- Eriogonum kennedyi kennedy's wild buckwheat
- Eriogonum kennedyi kern buckwheat
- Eriogonum kennedyi purpus' wild buckwheat
- Eriogonum latens inyo wild buckwheat (group 3)
- Eriogonum latifolium seaside wild buckwheat (group 4)
- Eriogonum libertini dubakella mountain buckwheat (group 3)
- Eriogonum lobbii lobb's wild buckwheat (group 3)
- Eriogonum luteolum tiburon buckwheat
- Eriogonum luteolum golden-carpet wild buckwheat
- Eriogonum luteolum mokelumne hill wild buckwheat
- Eriogonum luteolum jack's wild buckwheat
- Eriogonum maculatum spotted wild buckwheat (group 2)
- Eriogonum marifolium mccloud wild buckwheat
- Eriogonum marifolium marum-leaf wild buckwheat
- Eriogonum mensicola pinyon mesa buckwheat (group 4)
- Eriogonum microthecum northern limestone buckwheat
- Eriogonum microthecum yellow-flowered wild buckwheat
- Eriogonum microthecum san bernardino wild buckwheat
- Eriogonum microthecum johnston's buckwheat
- Eriogonum microthecum bear lake buckwheat
- Eriogonum microthecum inyo mountains buckwheat
- Eriogonum microthecum great basin wild buckwheat
- Eriogonum microthecum panamint mountains buckwheat
- Eriogonum microthecum schoolcraft's wild buckwheat
- Eriogonum microthecum simpson's wild buckwheat
- Eriogonum mohavense western mojave wild buckwheat (group 1)
- Eriogonum molestum pineland wild buckwheat (group 1)
- Eriogonum nervulosum snow mountain buckwheat (group 3)
- Eriogonum nidularium birdnest wild buckwheat (group 1)
- Eriogonum nortonii pinnacles buckwheat (group 1)
- Eriogonum nudum ear-shaped wild buckwheat
- Eriogonum nudum ben lomond buckwheat
- Eriogonum nudum reduced wild buckwheat
- Eriogonum nudum protruding buckwheat
- Eriogonum nudum mouse buckwheat
- Eriogonum nudum naked wild buckwheat
- Eriogonum nudum harford's wild buckwheat
- Eriogonum nudum del norte buckwheat
- Eriogonum nudum little-flower wild buckwheat
- Eriogonum nudum antioch dunes buckwheat
- Eriogonum nudum fremont's wild buckwheat
- Eriogonum nudum kings river buckwheat
- Eriogonum nudum sierran crest wild buckwheat
- Eriogonum nudum weston's wild buckwheat
- Eriogonum nummulare money wild buckwheat (group 4)
- Eriogonum nutans deeth wild buckwheat
- Eriogonum nutans dugway wild buckwheat
- Eriogonum ochrocephalum ochre-flowered buckwheat (group 4)
- Eriogonum ordii fort mohave wild buckwheat (group 2)
- Eriogonum ovalifolium heavenly wild buckwheat
- Eriogonum ovalifolium depressed wild buckwheat
- Eriogonum ovalifolium brown-margined buckwheat
- Eriogonum ovalifolium monarch buckwheat
- Eriogonum ovalifolium sierran cushion wild buckwheat
- Eriogonum ovalifolium cushion wild buckwheat
- Eriogonum ovalifolium purple cushion wild buckwheat
- Eriogonum ovalifolium cushenbury buckwheat
- Eriogonum palmerianum palmer's wild buckwheat (group 1)
- Eriogonum panamintense panamint mountain wild buckwheat (group 4)
- Eriogonum parishii parish's wild buckwheat (group 2)
- Eriogonum parvifolium seacliff wild buckwheat (group 4)
- Eriogonum pendulum waldo wild buckwheat (group 4)
- Eriogonum plumatella yucca wild buckwheat (group 4)
- Eriogonum polycladon sorrel wild buckwheat (group 1)
- Eriogonum polypodum tulare county buckwheat (group 3)
- Eriogonum prattenianum kettle dome buckwheat
- Eriogonum prattenianum nevada city wild buckwheat
- Eriogonum prociduum prostrate buckwheat (group 4)
- Eriogonum pusillum yellow turbans (group 2)
- Eriogonum pyrolifolium hairy shasta wild buckwheat
- Eriogonum pyrolifolium pyrola-leaved buckwheat
- Eriogonum reniforme kidney-leaf wild buckwheat (group 2)
- Eriogonum rixfordii pagoda wild buckwheat (group 2)
- Eriogonum rosense mount rose wild buckwheat (group 4)
- Eriogonum roseum wand wild buckwheat (group 1)
- Eriogonum rupinum wyman creek wild buckwheat (group 4)
- Eriogonum saxatile hoary wild buckwheat (group 4)
- Eriogonum shockleyi shockley's buckwheat (group 4)
- Eriogonum siskiyouense siskiyou buckwheat (group 3)
- Eriogonum spectabile barron's buckwheat (group 4)
- Eriogonum spergulinum mountain meadow wild buckwheat
- Eriogonum spergulinum redding's wild buckwheat
- Eriogonum spergulinum spurry wild buckwheat
- Eriogonum sphaerocephalum halimium wild buckwheat
- Eriogonum sphaerocephalum rock wild buckwheat
- Eriogonum strictum goose lake wild buckwheat
- Eriogonum strictum greene's buckwheat
- Eriogonum strictum proliferous wild buckwheat
- Eriogonum temblorense temblor buckwheat (group 1)
- Eriogonum ternatum ternate buckwheat (group 3)
- Eriogonum thomasii thomas' wild buckwheat (group 2)
- Eriogonum thornei thorne's buckwheat (group 4)
- Eriogonum thurberi thurber's wild buckwheat (group 2)
- Eriogonum trichopes little desert trumpet (group 2)
- Eriogonum tripodum tripod buckwheat (group 3)
- Eriogonum truncatum mount diablo buckwheat (group 1)
- Eriogonum twisselmannii twisselmann's buckwheat (group 3)
- Eriogonum umbellatum ahart's buckwheat
- Eriogonum umbellatum one-eyed sulphur flower
- Eriogonum umbellatum bay buckwheat
- Eriogonum umbellatum sherman pass sulphur flower
- Eriogonum umbellatum sherwin grade sulphur flower
- Eriogonum umbellatum coville's sulphur flower
- Eriogonum umbellatum bicolor sulphur flower
- Eriogonum umbellatum american valley sulphur flower
- Eriogonum umbellatum sierra nevada sulphur flower
- Eriogonum umbellatum warner mountains buckwheat
- Eriogonum umbellatum goodman's sulphur flower
- Eriogonum umbellatum mount eddy buckwheat
- Eriogonum umbellatum juniper sulphur-flowered buckwheat
- Eriogonum umbellatum scott valley buckwheat
- Eriogonum umbellatum alpine sulphur-flowered buckwheat
- Eriogonum umbellatum modoc sulphur flower
- Eriogonum umbellatum munz's sulphur flower
- Eriogonum umbellatum nelsons' sulphur flower
- Eriogonum umbellatum nevada sulphur flower
- Eriogonum umbellatum american river sulphur flower
- Eriogonum umbellatum small's sulphur flower
- Eriogonum umbellatum beautiful sulphur flower
- Eriogonum umbellatum ferris' sulphur flower
- Eriogonum umbellatum donner pass buckwheat
- Eriogonum umbellatum panamint sulphur flower
- Eriogonum umbellatum sulphur flower (group 3)
- Eriogonum ursinum blushing wild buckwheat
- Eriogonum ursinum bear valley wild buckwheat
- Eriogonum vestitum idria buckwheat (group 1)
- Eriogonum vimineum wicker-stem wild buckwheat (group 1)
- Eriogonum viridescens two-toothed wild buckwheat (group 2)
- Eriogonum wrightii ringed-stem bastard-sage
- Eriogonum wrightii knot-stem bastard-sage
- Eriogonum wrightii olancha peak buckwheat
- Eriogonum wrightii short-stemmed bastard-sage
- Eriogonum wrightii rough-node bastard-sage
- Eriogonum wrightii wright's bastard-sage
- Eriogonum wrightii bastard-sage (group 4)
- Erioneuron pilosum hairy erioneuron
- Eriophorum gracile slender cottongrass
- Eriophyllum ambiguum beautiful woolly sunflower
- Eriophyllum confertiflorum tansy-flowered woolly sunflower
- Eriophyllum confertiflorum golden-yarrow yellow-yarrow
- Eriophyllum congdonii congdon's woolly sunflower
- Eriophyllum jepsonii jepson's woolly sunflower
- Eriophyllum lanatum fort tejon woolly sunflower
- Eriophyllum lanatum oregon sunshine
- Eriophyllum lanatum southern sierra woolly sunflower
- Eriophyllum lanatum common woolly sunflower
- Eriophyllum latilobum san mateo woolly sunflower
- Eriophyllum mohavense barstow woolly sunflower
- Eriophyllum multicaule many-stem woolly sunflower
- Eriophyllum nubigenum yosemite woolly sunflower
- Eriophyllum pringlei pringle's woolly sunflower
- Eriophyllum staechadifolium seaside woolly sunflower
- Eriophyllum wallacei wallace's woolly daisy
- Erodium cicutarium redstem filaree
- Erodium moschatum greenstem filaree
- Erodium texanum texas filaree
- Eryngium alismifolium alisma-leaved button-celery
- Eryngium aristulatum hoover's button-celery
- Eryngium aristulatum san diego button-celery
- Eryngium armatum coastal button-celery
- Eryngium articulatum beethistle
- Eryngium castrense great valley coyote-thistle
- Eryngium constancei loch lomond button-celery
- Eryngium mathiasiae mathias' button-celery
- Eryngium pendletonense pendleton button-celery
- Eryngium pinnatisectum tuolumne button-celery
- Eryngium racemosum delta button-celery
- Eryngium spinosepalum spiny-sepaled button-celery
- Eryngium vaseyi coyote-thistle
- Erysimum ammophilum sand-loving wallflower
- Erysimum capitatum western wallflower
- Erysimum cheiranthoides wormseed mustard
- Erysimum franciscanum san francisco wallflower
- Erysimum insulare island wallflower
- Erysimum menziesii menzies' wallflower
- Erysimum suffrutescens suffrutescent wallflower
- Erysimum teretifolium santa cruz wallflower
- Erythronium citrinum lemon-colored fawn lily
- Erythronium citrinum scott mountains fawn lily
- Erythronium grandiflorum glacier lily
- Erythronium helenae st. helena fawn lily
- Erythronium hendersonii henderson's fawn lily
- Erythronium klamathense klamath fawn lily
- Erythronium oregonum giant fawn lily
- Erythronium pluriflorum shuteye peak fawn lily
- Erythronium pusaterii kaweah fawn lily
- Erythronium revolutum coast fawn lily
- Erythronium taylorii pilot ridge fawn lily
- Erythronium tuolumnense tuolumne fawn lily
- Eschscholzia californica california poppy
- Eschscholzia hypecoides san benito poppy
- Eschscholzia lemmonii tejon poppy
- Eschscholzia lobbii frying pans
- Eschscholzia ramosa island poppy
- Eschscholzia rhombipetala diamond-petaled california poppy
- Eucalyptus camaldulensis red gum river red gum
- Eucalyptus citriodora lemon-scented gum
- Eucalyptus cladocalyx sugar gum
- Eucalyptus conferruminata spider gum bushy yate
- Eucalyptus globulus blue gum
- Eucalyptus polyanthemos silver dollar gum red box
- Eucalyptus pulchella white peppermint
- Eucalyptus sideroxylon red iron bark
- Eucalyptus tereticornis forest red gum
- Eucalyptus viminalis manna gum ribbon gum
- Eucephalus glabratus siskiyou aster
- Eucephalus tomentellus brickellbush aster
- Eucephalus vialis wayside aster
- Euchiton gymnocephalus creeping cudweed
- Euchiton involucratus star cottonleaf
- Euchiton sphaericus globe cottonleaf
- Eucnide rupestris annual rock-nettle
- Euonymus occidentalis western burning bush
- Euphorbia abramsiana abrams' spurge
- Euphorbia albomarginata rattlesnake sandmat
- Euphorbia arizonica arizona spurge
- Euphorbia crenulata chinese caps
- Euphorbia cyathophora painted leaf
- Euphorbia davidii david's poinsettia
- Euphorbia dendroides tree spurge
- Euphorbia dentata toothed poinsettia
- Euphorbia eriantha beetle spurge
- Euphorbia exstipulata clark mountain spurge
- Euphorbia fendleri fendler's sandmat
- Euphorbia glyptosperma ridge-seeded spurge
- Euphorbia helioscopia wartweed
- Euphorbia hooveri hoover's spurge
- Euphorbia jaegeri orocopia mountains spurge
- Euphorbia lathyris caper spurge
- Euphorbia lurida woodland spurge
- Euphorbia maculata spotted spurge
- Euphorbia melanadenia red-gland spurge
- Euphorbia micromera sonoran sandmat
- Euphorbia misera cliff spurge
- Euphorbia myrsinites myrtle spurge
- Euphorbia nutans eyebane spurge
- Euphorbia oblongata eggleaf spurge
- Euphorbia ocellata dune spurge
- Euphorbia ocellata valley spurge
- Euphorbia ocellata stony creek spurge
- Euphorbia parishii parish's sandmat
- Euphorbia parryi parry's spurge
- Euphorbia pediculifera carrizo mountain sandmat
- Euphorbia peplus petty spurge
- Euphorbia platysperma flat-seeded spurge
- Euphorbia polycarpa smallseed sandmat
- Euphorbia prostrata prostrate sandmat
- Euphorbia revoluta revolute spurge
- Euphorbia rigida gopher spurge
- Euphorbia schizoloba mojave spurge
- Euphorbia serpens matted sandmat
- Euphorbia serpyllifolia thyme-leafed spurge
- Euphorbia setiloba yuma sandmat
- Euphorbia spathulata warty spurge
- Euphorbia terracina geraldton carnation weed
- Euphorbia vallis-mortae death valley sandmat
- Euphorbia virgata leafy spurge
- Euphrosyne acerosa copperwort
- Euphrosyne nevadensis nevada wormwood
- Eurybia merita subalpine aster
- Euthamia occidentalis western goldenrod
- Extriplex californica california orach
- Extriplex joaquinana san joaquin spearscale
- Fallopia baldschuanica bukhara fleeceflower
- Fallopia convolvulus black bindweed
- Fallopia japonica japanese knotweed
- Fallopia sachalinensis giant knotweed
- Fendlerella utahensis yerba desierto
- Ferocactus cylindraceus california barrel cactus
- Ferocactus viridescens san diego barrel cactus
- Festuca arundinacea tall fescue
- Festuca brachyphylla alpine fescue
- Festuca bromoides brome fescue
- Festuca californica california fescue
- Festuca idahoensis idaho fescue blue bunchgrass
- Festuca minutiflora small-flowered fescue
- Festuca myuros rattail sixweeks grass
- Festuca occidentalis western fescue
- Festuca octoflora sixweeks grass
- Festuca perennis rye grass
- Festuca pratensis meadow fescue
- Festuca rubra red fescue
- Festuca saximontana mountain fescue
- Festuca subulata bearded fescue
- Festuca subuliflora crinkle-awn fescue
- Festuca temulenta darnel tares
- Festuca trachyphylla hard or sheep fescue
- Festuca viridula mountain bunch grass green fescue
- Ficus carica edible fig
- Filago pyramidata broadleaf cottonrose
- Fimbristylis thermalis hot springs fimbristylis
- Foeniculum vulgare fennel
- Forestiera pubescens desert olive
- Fouquieria splendens ocotillo
- Fragaria chiloensis beach strawberry
- Fragaria vesca wood strawberry
- Fragaria virginiana mountain strawberry
- Frangula californica california coffee berry
- Frangula purshiana caribou coffee berry
- Frangula purshiana cascara
- Frangula rubra sierra coffee berry
- Frankenia palmeri palmer's frankenia
- Frankenia pulverulenta european sea heath
- Frankenia salina alkali heath
- Frasera albomarginata desert green-gentian
- Frasera albomarginata clark mountain green-gentian
- Frasera neglecta pine green-gentian
- Frasera speciosa monument plant
- Frasera umpquaensis umpqua green-gentian
- Fraxinus anomala single-leaf ash
- Fraxinus dipetala california ash
- Fraxinus latifolia oregon ash
- Fraxinus parryi chaparral ash
- Fraxinus velutina velvet ash
- Fremontodendron decumbens pine hill flannelbush
- Fremontodendron mexicanum mexican flannelbush
- Fritillaria affinis checker lily
- Fritillaria agrestis stinkbells
- Fritillaria biflora hillsborough chocolate lily
- Fritillaria biflora chocolate lily mission bells
- Fritillaria brandegeei greenhorn fritillary
- Fritillaria eastwoodiae butte county fritillary
- Fritillaria falcata talus fritillary
- Fritillaria gentneri gentner's fritillary
- Fritillaria glauca siskiyou fritillaria
- Fritillaria liliacea fragrant fritillary
- Fritillaria micrantha brown bells
- Fritillaria ojaiensis ojai fritillary
- Fritillaria pinetorum pine fritillary
- Fritillaria pluriflora adobe-lily
- Fritillaria pudica yellow fritillary
- Fritillaria purdyi purdy's fritillary
- Fritillaria recurva scarlet fritillary
- Fritillaria striata striped adobe-lily
- Fritillaria viridea san benito fritillary
- Fumaria capreolata white ramping fumitory
- Fumaria officinalis fumitory
- Funastrum crispum wavyleaf twinevine
- Funastrum cynanchoides climbing milkweed
- Funastrum hirtellum trailing townula
- Funastrum utahense utah vine milkweed
- Galium ambiguum yolla bolly bedstraw
- Galium andrewsii phlox-leaf serpentine bedstraw
- Galium andrewsii phlox-leaved bedstraw
- Galium angustifolium borrego bedstraw
- Galium angustifolium san antonio canyon bedstraw
- Galium angustifolium slender bedstraw
- Galium angustifolium san jacinto mountains bedstraw
- Galium angustifolium onyx peak bedstraw
- Galium angustifolium narrowly leaved bedstraw
- Galium aparine goose grass
- Galium bifolium low mountain bedstraw
- Galium bolanderi bolander's bedstraw
- Galium boreale northern bedstraw
- Galium buxifolium box bedstraw
- Galium californicum cone peak bedstraw
- Galium californicum san miguel island bedstraw
- Galium californicum alvin meadow bedstraw
- Galium californicum el dorado bedstraw
- Galium californicum california bedstraw
- Galium catalinense san clemente island bedstraw
- Galium catalinense santa catalina island bedstraw
- Galium clementis santa lucia bedstraw
- Galium cliftonsmithii santa barbara bedstraw
- Galium divaricatum lamarck's bedstraw
- Galium glabrescens modoc bedstraw
- Galium grande san gabriel bedstraw
- Galium grayanum gray's bedstraw
- Galium hallii nodding bedstraw
- Galium hardhamiae hardham's bedstraw
- Galium hilendiae panamint mountains bedstraw
- Galium hilendiae kingston mountains bedstraw
- Galium hilendiae hilend's bedstraw
- Galium hypotrichium telescope peak bedstraw
- Galium hypotrichium alpine bedstraw
- Galium jepsonii jepson's bedstraw
- Galium johnstonii johnston's bedstraw
- Galium matthewsii matthews' bedstraw
- Galium mollugo hedge bedstraw
- Galium multiflorum kellogg's bedstraw
- Galium munzii munz's bedstraw
- Galium murale tiny bedstraw
- Galium muricatum humboldt bedstraw
- Galium nuttallii nuttall's island bedstraw
- Galium nuttallii san diego bedstraw
- Galium oreganum oregon bedstraw
- Galium parishii parish's bedstraw
- Galium parisiense wall bedstraw
- Galium porrigens climbing bedstraw
- Galium proliferum desert bedstraw
- Galium serpenticum scott mountain bedstraw
- Galium serpenticum warner mountains bedstraw
- Galium sparsiflorum sequoia bedstraw
- Galium tricornutum rough corn bedstraw
- Galium triflorum sweet-scented bedstraw
- Galium wrightii wright's bedstraw
- Gambelia speciosa showy island snapdragon showy greenbright
- Gastridium phleoides nit grass
- Gaultheria humifusa alpine wintergreen
- Gaultheria ovatifolia slender wintergreen
- Gaultheria shallon salal
- Genista maderensis madeira broom
- Genista monosperma bridal veil broom
- Genista monspessulana french broom
- Gentiana affinis oregon gentian
- Gentiana calycosa explorers' gentian
- Gentiana fremontii fremont's gentian
- Gentiana newberryi alpine gentian
- Gentiana plurisetosa klamath gentian
- Gentiana prostrata pygmy gentian
- Gentiana sceptrum king's scepter gentian
- Gentiana setigera mendocino gentian
- Gentianella amarella northern gentian
- Gentianopsis holopetala sierra gentian
- Gentianopsis simplex hikers' gentian
- Geraea canescens desert-sunflower
- Geraea viscida sticky geraea
- Geum aleppicum aleppo or yellow avens
- Geum macrophyllum large-leaved avens
- Geum triflorum prairie-smoke
- Gilia achilleifolia california gilia
- Gilia aliquanta puffcalyx gilia western gilia
- Gilia angelensis chaparral gilia
- Gilia austro-occidentalis southwestern gilia
- Gilia brecciarum break gilia nevada gilia
- Gilia cana desert gilia showy gilia
- Gilia capitata blue coast gilia
- Gilia capitata pacific gilia
- Gilia capitata woolly-headed gilia
- Gilia capitata bluehead gilia
- Gilia clivorum purplespot gilia
- Gilia clokeyi clokey's gilia
- Gilia diegensis coastal gilia
- Gilia inconspicua shy gilia
- Gilia interior inland gilia
- Gilia latiflora cuyama gilia
- Gilia latiflora davy's broad-flowered gilia
- Gilia latiflora broad-leaved gilia
- Gilia latiflora broad-flowered gilia
- Gilia leptantha san bernardino gilia
- Gilia leptantha pine gilia
- Gilia leptantha purpus' fineflowered gilia
- Gilia leptantha fineflowered gilia
- Gilia malior scrub gilia great basin gilia
- Gilia millefoliata dark-eyed gilia
- Gilia minor little gilia
- Gilia modocensis modoc gilia
- Gilia nevinii nevin's gilia
- Gilia ochroleuca volcanic gilia
- Gilia ophthalmoides eyed gilia yellow-eyed gilia
- Gilia salticola salt gilia
- Gilia scopulorum rock gilia
- Gilia sinuata rosy gilia
- Gilia stellata star gilia
- Gilia tenuiflora trumpet-throated gilia
- Gilia tenuiflora monterey gilia
- Gilia tenuiflora hoffmann's slender-flowered gilia
- Gilia tenuiflora slender-flowered gilia greater yellowthroat gilia
- Gilia transmontana transmontane gilia
- Gilia tricolor bird's-eye gilia
- Gilia yorkii monarch gilia
- Gilmania luteola golden-carpet gilmania
- Githopsis diffusa mission canyon bluecup
- Githopsis pulchella serpentine bluecup
- Githopsis tenella delicate bluecup
- Glaucium flavum sea poppy
- Glebionis coronaria garland or crown daisy
- Glebionis segetum corn chrysanthemum
- Gleditsia triacanthos honey locust
- Glehnia littoralis american glehnia
- Glinus radiatus shining damascisa
- Glossopetalon pungens pungent glossopetalon
- Glossopetalon spinescens nevada greasewood
- Glyceria ×occidentalis western manna grass
- Glyceria borealis boreal manna grass
- Glyceria declinata low manna grass
- Glyceria elata fowl manna grass
- Glyceria fluitans water manna grass
- Glyceria grandis american manna grass
- Glyceria leptostachya narrow manna grass
- Glyceria striata ridged manna grass
- Glycyrrhiza glabra licorice
- Glycyrrhiza lepidota wild licorice
- Goodmania luteola golden goodmania
- Goodyera oblongifolia rattlesnake-plantain
- Gossypium hirsutum cotton
- Gratiola ebracteata bractless hedge-hyssop
- Gratiola heterosepala boggs lake hedge-hyssop
- Gratiola neglecta clammy hedge-hyssop
- Grindelia ×paludosa suisun gumplant
- Grindelia fraxinipratensis ash meadows gumplant
- Grindelia hallii san diego gumplant
- Grindelia stricta marsh gumplant
- Grusonia parishii parish's club-cholla
- Grusonia pulchella beautiful club-cholla
- Guilleminea densa small matweed
- Gunnera tinctoria chilean-rhubarb
- Gutierrezia californica california matchweed
- Gutierrezia microcephala sticky snakeweed
- Gutierrezia sarothrae matchweed
- Gypsophila elegans showy baby's-breath
- Gypsophila paniculata baby's-breath
- Gypsophila scorzonerifolia glandular baby's-breath
- Hackelia amethystina amethyst stickseed
- Hackelia bella beautiful stickseed
- Hackelia brevicula poison canyon stickseed
- Hackelia californica california stickseed
- Hackelia cusickii cusick's stickseed
- Hackelia floribunda many-flowered stickseed
- Hackelia micrantha jessica's stickseed meadow stickseed
- Hackelia mundula pink-flowered stickseed
- Hackelia nervosa sierran stickseed
- Hackelia setosa bristly stickseed siskiyou stickseed
- Hackelia sharsmithii sharsmith's stickseed
- Hackelia velutina velvety stickseed
- Halimodendron halodendron russian salt tree
- Halogeton glomeratus saltlover
- Harmonia doris-nilesiae niles' harmonia
- Harmonia guggolziorum guggolz's harmonia
- Harmonia hallii hall's harmonia
- Harmonia nutans nodding harmonia
- Harmonia stebbinsii stebbins' harmonia
- Harpagonella palmeri palmer's grapplinghook
- Hazardia brickellioides brickell goldenbush
- Hazardia cana san clemente island hazardia
- Hazardia detonsa island hazardia
- Hazardia orcuttii orcutt's hazardia
- Hazardia squarrosa saw-toothed goldenbush
- Hazardia whitneyi whitney's goldenbush
- Hedeoma drummondii drummond's false pennyroyal
- Hedeoma nana california mock pennyroyal
- Hedera canariensis canary islands ivy
- Hedera helix english ivy
- Hedychium flavescens yellow ginger
- Hedypnois rhagadioloides crete weed
- Helianthella castanea diablo helianthella
- Helianthus bolanderi bolander's sunflower
- Helianthus californicus california sunflower
- Helianthus ciliaris blueweed
- Helianthus cusickii cusick's sunflower
- Helianthus exilis serpentine sunflower
- Helianthus gracilentus slender sunflower
- Helianthus inexpectatus newhall sunflower
- Helianthus niveus algodones dunes sunflower
- Helianthus nuttallii nuttall's sunflower
- Helianthus nuttallii los angeles sunflower
- Helianthus petiolaris prairie sunflower
- Helichrysum petiolare licorice plant
- Heliomeris multiflora nevada goldeneye
- Heliotropium amplexicaule fragrant heliotrope
- Heliotropium convolvulaceum morning-glory heliotrope
- Heliotropium curassavicum seaside heliotrope alkali heliotrope
- Heliotropium europaeum european heliotrope
- Helminthotheca echioides bristly ox-tongue
- Hemizonia congesta mendocino tarplant
- Hemizonia congesta pale-yellow hayfield tarplant
- Hemizonia congesta tracy's tarplant
- Heracleum maximum cow parsnip giant hogweed
- Herissantia crispa curly herissantia
- Hesperevax acaulis stemless evax
- Hesperevax acaulis fire evax
- Hesperevax acaulis dwarf evax
- Hesperevax caulescens hogwallow starfish
- Hesperevax sparsiflora shortleaved evax
- Hesperevax sparsiflora erect evax
- Hesperis matronalis dame's rocket
- Hesperocyparis abramsiana santa cruz cypress
- Hesperocyparis bakeri baker cypress siskiyou cypress
- Hesperocyparis forbesii tecate cypress
- Hesperocyparis goveniana gowen cypress
- Hesperocyparis macnabiana mcnab cypress
- Hesperocyparis macrocarpa monterey cypress
- Hesperocyparis nevadensis piute cypress
- Hesperocyparis pygmaea pygmy cypress
- Hesperocyparis sargentii sargent cypress
- Hesperocyparis stephensonii cuyamaca cypress
- Hesperolinon adenophyllum glandular western flax
- Hesperolinon bicarpellatum two-carpellate western flax
- Hesperolinon breweri brewer's western flax
- Hesperolinon congestum marin western flax
- Hesperolinon didymocarpum lake county western flax
- Hesperolinon drymarioides drymaria-like western flax
- Hesperolinon tehamense tehama county western flax
- Heteranthera dubia water star-grass
- Heteropogon contortus tanglehead
- Heterotheca grandiflora telegraph weed
- Heterotheca monarchensis monarch goldenaster
- Heterotheca oregona rayless goldenaster
- Heterotheca sessiliflora beach goldenaster
- Heterotheca sessiliflora sessileflower goldenaster
- Heterotheca shevockii shevock's goldenaster
- Heterotheca subaxillaris camphor-weed
- Heterotheca villosa hairy goldenaster
- Heuchera abramsii abrams' alumroot
- Heuchera brevistaminea laguna mountains alumroot
- Heuchera hirsutissima shaggy-haired alumroot
- Heuchera maxima island alumroot
- Heuchera parishii parish's alumroot
- Hibiscus denudatus pale face
- Hibiscus lasiocarpos woolly rose-mallow
- Hibiscus trionum flower-of-an-hour
- Hieracium albiflorum white hawkweed
- Hieracium argutum southern hawkweed
- Hieracium aurantiacum orange hawkweed
- Hieracium bolanderi bolander's hawkweed
- Hieracium greenei greene's hawkweed
- Hieracium horridum prickly hawkweed
- Hieracium nudicaule naked-stemmed hawkweed
- Hieracium parryi parry's hawkweed
- Hieracium scouleri western hawkweed
- Hieracium triste slender hawkweed
- Hilaria jamesii galleta
- Hilaria rigida big galleta
- Hoffmannseggia glauca pig-nut hog potato
- Hoita strobilina loma prieta hoita
- Holcus lanatus common velvet grass
- Holcus mollis creeping velvet grass
- Hollisteria lanata false spikeflower
- Holmgrenanthe petrophila rock lady
- Holocarpha macradenia santa cruz tarplant
- Holocarpha virgata graceful tarplant
- Holodiscus discolor oceanspray
- Holozonia filipes whitecrown
- Hordeum arizonicum arizona barley
- Hordeum brachyantherum northern barley
- Hordeum brachyantherum california barley
- Hordeum depressum low barley alkali barley
- Hordeum intercedens bobtail barley
- Hordeum jubatum foxtail barley squirreltail barley
- Hordeum marinum mediterranean barley
- Hordeum murinum smooth barley
- Hordeum murinum hare barley
- Hordeum murinum wall barley
- Hordeum vulgare barley
- Horkelia bolanderi bolander's horkelia
- Horkelia congesta josephine horkelia
- Horkelia cuneata mesa horkelia
- Horkelia cuneata kellogg's horkelia
- Horkelia daucifolia jepson's horkelia
- Horkelia hendersonii henderson's horkelia
- Horkelia hispidula white mountains horkelia
- Horkelia howellii howell's horkelia
- Horkelia marinensis point reyes horkelia
- Horkelia parryi parry's horkelia
- Horkelia sericata silky horkelia
- Horkelia tenuiloba thin-lobed horkelia
- Horkelia truncata ramona horkelia
- Horkelia tularensis kern plateau horkelia
- Horkelia wilderae barton flats horkelia
- Horkelia yadonii santa lucia horkelia
- Horsfordia alata pink velvet-mallow
- Horsfordia newberryi newberry's velvet-mallow
- Hosackia crassifolia otay mountain hosackia
- Hosackia gracilis harlequin lotus
- Hosackia oblongifolia copper-flowered bird's-foot trefoil
- Hosackia yollabolliensis yolla bolly mountains bird's-foot trefoil
- Howellanthus dalesianus scott mountain phacelia
- Howellia aquatilis water howellia
- Hulsea brevifolia shortleaved hulsea
- Hulsea californica san diego sunflower
- Hulsea mexicana mexican hulsea
- Hulsea nana little hulsea
- Hulsea vestita beautiful hulsea
- Hulsea vestita san gabriel mountains sunflower
- Hulsea vestita inyo hulsea
- Hulsea vestita parry's sunflower
- Hulsea vestita pygmy hulsea
- Humulus lupulus european hop
- Hydrophyllum alpestre alpine breeches
- Hydrophyllum fendleri white waterleaf
- Hydrophyllum occidentale western waterleaf
- Hydrophyllum tenuipes slenderfoot waterleaf pacific waterleaf
- Hymenopappus filifolius hairy-podded fine-leaf hymenopappus
- Hymenopappus filifolius little cutleaf
- Hymenothrix wrightii wright's hymenothrix
- Hymenoxys lemmonii alkali hymenoxys
- Hymenoxys odorata bitter hymenoxys
- Hyparrhenia hirta thatching grass
- Hypericum anagalloides tinker's penny
- Hypericum calycinum aaron's beard
- Hypericum concinnum gold-wire
- Hypericum perforatum klamathweed
- Hypochaeris glabra smooth cat's-ear
- Hypochaeris radicata rough cat's-ear
- Iberis umbellata globe candytuft
- Ilex aquifolium english holly
- Iliamna bakeri baker's globe mallow
- Iliamna latibracteata california globe mallow
- Iliamna rivularis streambank wild hollyhock
- Impatiens balfourii kashmir balsam
- Impatiens capensis spotted jewelweed
- Impatiens glandulifera policeman's helmet
- Imperata brevifolia california satintail
- Ionactis alpina lava-aster crag-aster
- Ipomoea hederacea ivy morning-glory
- Ipomoea purpurea common morning-glory
- Ipomopsis effusa baja california ipomopsis
- Ipomopsis tenuifolia slender-leaved ipomopsis
- Iris bracteata siskiyou iris
- Iris chrysophylla yellow-flowered iris
- Iris foetidissima coral iris
- Iris hartwegii tuolumne iris
- Iris innominata del norte county iris
- Iris longipetala coast iris
- Iris missouriensis western blue flag
- Iris munzii munz's iris
- Iris tenax orleans iris
- Isatis tinctoria woad
- Isocoma acradenia alkali goldenbush
- Isocoma arguta carquinez goldenbush
- Isocoma menziesii decumbent goldenbush
- Isocoma menziesii satan's goldenbush
- Isocoma menziesii coastal goldenbush
- Iva axillaris poverty weed
- Iva hayesiana san diego marsh-elder
- Ivesia aperta sierra valley ivesia
- Ivesia aperta dog valley ivesia
- Ivesia argyrocoma silver-haired ivesia
- Ivesia arizonica yellow purpusia
- Ivesia baileyi bailey's ivesia
- Ivesia baileyi owyhee ivesia
- Ivesia callida tahquitz ivesia
- Ivesia campestris field ivesia
- Ivesia jaegeri jaeger's ivesia
- Ivesia kingii alkali ivesia
- Ivesia longibracteata castle crags ivesia
- Ivesia lycopodioides club-moss ivesia
- Ivesia paniculata ash creek ivesia
- Ivesia patellifera kingston mountains ivesia
- Ivesia pickeringii pickering's ivesia
- Ivesia santolinoides mousetail ivesia
- Ivesia sericoleuca plumas ivesia
- Ivesia unguiculata yosemite ivesia
- Ivesia webberi webber's ivesia
- Ixia maculata african cornlily
- Jacaranda mimosifolia blue jacaranda
- Jamesia americana rosy-petalled cliffbush
- Jensia yosemitana yosemite tarplant
- Jepsonia heterandra foothill jepsonia
- Jepsonia malvifolia island jepsonia
- Johanneshowellia puberula downy buckwheat
- Juglans californica southern california black walnut
- Juglans hindsii northern california black walnut
- Juglans regia persian or english walnut
- Juncus acuminatus tapered rush (group 3)
- Juncus acutus southwestern spiny rush
- Juncus ambiguus frog rush (group 1)
- Juncus anthelatus kentucky or poverty rush (group 5)
- Juncus articulatus jointed rush (group 3)
- Juncus balticus baltic rush (group 2)
- Juncus bolanderi bolander's rush (group 3)
- Juncus brachyphyllus shortleaved rush (group 5)
- Juncus breweri salt or brewer's rush (group 2)
- Juncus bryoides moss rush (group 1)
- Juncus bufonius clustered toad rush
- Juncus bufonius western toad rush
- Juncus bufonius toad rush (group 1)
- Juncus capillaris hairstemmed rush (group 1)
- Juncus capitatus dwarf rush (group 1)
- Juncus chlorocephalus greenheaded rush (group 3)
- Juncus confusus colorado rush (group 5)
- Juncus cooperi cooper's rush (group 2)
- Juncus covillei coville's rush (group 6)
- Juncus cyperoides bolivian rush (group 6)
- Juncus diffusissimus slim-pod rush (group 3)
- Juncus digitatus finger rush (group 1)
- Juncus drummondii drummond's rush (group 2)
- Juncus dubius mariposa rush (group 3)
- Juncus dudleyi dudley's rush (group 5)
- Juncus duranii duran's rush (group 3)
- Juncus effusus sonoran or baja rush
- Juncus effusus common rush
- Juncus effusus pacific rush
- Juncus effusus eastern soft rush
- Juncus effusus soft or lamp rush (group 2)
- Juncus ensifolius dagger rush swordleaved rush (group 4)
- Juncus exiguus klamath or weak rush (group 2)
- Juncus falcatus sickleleaved rush
- Juncus falcatus alaskan sickleleaved rush
- Juncus gerardi mud rush (group 5)
- Juncus hemiendytus center basin rush
- Juncus hemiendytus hermann's dwarf rush
- Juncus hesperius coast or bog rush (group 2)
- Juncus howellii howell's rush (group 6)
- Juncus interior inland rush (group 5)
- Juncus kelloggii kellogg's dwarf rush (group 1)
- Juncus laccatus shiny rush (group 2)
- Juncus leiospermus ahart's dwarf rush
- Juncus leiospermus red bluff dwarf rush
- Juncus lescurii san francisco rush (group 2)
- Juncus longistylis long-styled rush (group 6)
- Juncus luciensis santa lucia dwarf rush (group 1)
- Juncus macrandrus long-anthered rush (group 4)
- Juncus macrophyllus long-leaved rush (group 6)
- Juncus marginatus grassleaved or red-anthered rush (group 6)
- Juncus mertensianus mertens' rush (group 3)
- Juncus mexicanus mexican rush (group 2)
- Juncus nevadensis dune rush
- Juncus nevadensis nevada or sierran rush
- Juncus nodosus knotted rush (group 3)
- Juncus occidentalis western rush (group 5)
- Juncus orthophyllus straightleaved rush (group 6)
- Juncus oxymeris pointed rush (group 4)
- Juncus parryi parry's rush (group 2)
- Juncus patens spreading rush (group 2)
- Juncus phaeocephalus panicled rush
- Juncus phaeocephalus brownheaded rush
- Juncus planifolius new zealand or flat-leaved rush (groups 1 6)
- Juncus regelii regel's rush (group 6)
- Juncus rugulosus wrinkled rush (group 3)
- Juncus saximontanus rocky mountain rush (group 4)
- Juncus supiniformis hair-leaved rush (group 3)
- Juncus tenuis poverty or slender rush (group 5)
- Juncus textilis mat or basket rush (group 2)
- Juncus tiehmii tiehm's rush (group 1)
- Juncus torreyi torrey's rush (group 3)
- Juncus triformis yosemite dwarf rush (group 1)
- Juncus uncialis inch-high rush (group 1)
- Juncus usitatus australian rush (group 2)
- Juncus xiphioides iris-leaved rush (group 4)
- Juniperus californica california juniper
- Juniperus communis depressed juniper
- Juniperus communis jack's juniper
- Juniperus communis mountain juniper
- Juniperus communis common juniper
- Juniperus grandis sierra juniper grand juniper
- Juniperus occidentalis western juniper
- Juniperus osteosperma utah juniper
- Justicia californica beloperone chuparosa
- Kalmia polifolia swamp laurel box laurel
- Kobresia myosuroides seep kobresia
- Koeberlinia spinosa slender-spined all thorn
- Koeleria gerardi annual june grass bristly koeleria
- Koeleria macrantha june grass
- Kopsiopsis hookeri small ground-cone
- Kopsiopsis strobilacea california ground-cone
- Krameria bicolor white rhatany
- Krameria erecta pima rhatany purple heather little-leaved rhatany
- Krascheninnikovia lanata winter fat
- Lactuca serriola prickly lettuce
- Laennecia coulteri coulter's horseweed
- Lagunaria patersonia norfolk island hibiscus cow itch tree
- Lamium amplexicaule henbit
- Langloisia setosissima lilac sunbonnet
- Langloisia setosissima bristly langloisia
- Lappula redowskii crowned stickseed
- Lappula redowskii western stickseed
- Lappula squarrosa two-rowed stickseed
- Lastarriaea coriacea leather-spineflower
- Lasthenia burkei burke's goldfields
- Lasthenia californica baker's goldfields
- Lasthenia californica california goldfields
- Lasthenia californica perennial goldfields
- Lasthenia chrysantha alkali-sink goldfields
- Lasthenia conjugens contra costa goldfields
- Lasthenia coronaria crowned or royal goldfields
- Lasthenia debilis greene's goldfields
- Lasthenia ferrisiae ferris' goldfields
- Lasthenia fremontii fremont's goldfields
- Lasthenia glaberrima smooth goldfields
- Lasthenia glabrata coulter's goldfields
- Lasthenia glabrata yellow-ray goldfields
- Lasthenia gracilis common goldfields
- Lasthenia leptalea salinas valley goldfields
- Lasthenia maritima maritime or seaside goldfields
- Lasthenia microglossa small-ray goldfields
- Lasthenia minor coastal goldfields
- Lasthenia platycarpha alkali goldfields
- Lathrocasis tenerrima delicate gilia
- Lathyrus biflorus two-flowered pea
- Lathyrus delnorticus del norte pea
- Lathyrus glandulosus sticky pea
- Lathyrus hirsutus caley pea
- Lathyrus hitchcockianus bullfrog mountain pea
- Lathyrus japonicus seaside pea
- Lathyrus jepsonii delta tule pea
- Lathyrus latifolius perennial sweet pea
- Lathyrus odoratus sweet pea
- Lathyrus palustris marsh pea
- Lathyrus rigidus rigid pea
- Lathyrus splendens pride-of-california
- Lathyrus tingitanus tangier pea
- Laurus nobilis bay laurel
- Lavatera olbia tree lavatera
- Lavatera trimestris annual lavatera rose mallow
- Layia carnosa beach layia
- Layia discoidea rayless layia
- Layia glandulosa white layia
- Layia heterotricha pale-yellow layia
- Layia jonesii jones' layia
- Layia leucopappa comanche point layia
- Layia munzii munz's tidy-tips
- Layia platyglossa tidy-tips
- Layia septentrionalis colusa layia
- Leersia oryzoides rice cutgrass
- Legenere limosa legenere
- Lens culinaris lentil
- Leontodon saxatilis hairy hawkbit
- Lepechinia cardiophylla heart-leaved pitcher sage
- Lepechinia fragrans fragrant pitcher sage
- Lepechinia ganderi gander's pitcher sage
- Lepechinia rossii ross' pitcher sage
- Lepidium appelianum white-top
- Lepidium chalepense lens-podded hoary cress
- Lepidium coronopus swine cress
- Lepidium didymum lesser swine cress
- Lepidium draba heart-podded hoary cress
- Lepidium jaredii jared's peppergrass
- Lepidium latifolium perennial pepperweed
- Leptochloa dubia green sprangletop
- Leptochloa fusca bearded sprangletop
- Leptochloa fusca mexican sprangletop
- Leptochloa fusca sprangletop
- Leptochloa panicea red sprangletop
- Leptochloa viscida sticky sprangletop sonoran sprangletop
- Leptosiphon acicularis bristly leptosiphon
- Leptosiphon ambiguus serpentine leptosiphon
- Leptosiphon ciliatus whisker brush
- Leptosiphon croceus coast yellow leptosiphon
- Leptosiphon floribundus santa rosa mountains leptosiphon
- Leptosiphon grandiflorus large-flowered leptosiphon
- Leptosiphon jepsonii jepson's leptosiphon
- Leptosiphon latisectus broad-lobed leptosiphon
- Leptosiphon montanus mustang clover
- Leptosiphon nuttallii mount tedoc leptosiphon
- Leptosiphon oblanceolatus sierra nevada leptosiphon
- Leptosiphon pygmaeus pygmy leptosiphon
- Leptosiphon rattanii rattan's leptosiphon
- Leptosiphon rosaceus rose leptosiphon
- Leptosiphon serrulatus madera leptosiphon
- Leptospermum laevigatum australian tea tree
- Leptosyne gigantea giant tickseed
- Leptosyne hamiltonii mount hamilton tickseed
- Leptosyne maritima sea dahlia
- Lessingia arachnoidea crystal springs lessingia
- Lessingia germanorum san francisco lessingia
- Lessingia glandulifera warner springs lessingia
- Lessingia hololeuca woolly-headed lessingia
- Lessingia leptoclada sierra lessingia
- Lessingia micradenia smooth lessingia
- Lessingia micradenia tamalpais lessingia
- Lessingia nana dwarf lessingia
- Lessingia tenuis spring lessingia
- Lessingia virgata wand lessingia
- Leucanthemum lacustre portuguese daisy
- Leucanthemum maximum shasta daisy
- Leucanthemum vulgare ox-eye daisy
- Leucojum aestivum snowflake
- Leucosyris arida silver lake daisy
- Leucosyris carnosa shrubby alkali aster
- Leucothoe davisiae sierra laurel
- Lewisia brachycalyx short-sepaled lewisia
- Lewisia cantelovii cantelow's lewisia
- Lewisia congdonii congdon's lewisia
- Lewisia cotyledon heckner's lewisia
- Lewisia cotyledon howell's lewisia
- Lewisia cotyledon cliff maids
- Lewisia disepala yosemite lewisia
- Lewisia glandulosa glandular lewisia
- Lewisia kelloggii hutchison's lewisia
- Lewisia kelloggii kellogg's lewisia
- Lewisia leeana quill-leaved lewisia
- Lewisia longipetala long-petaled lewisia
- Lewisia nevadensis nevada lewisia
- Lewisia oppositifolia opposite-leaved lewisia
- Lewisia pygmaea dwarf lewisia
- Lewisia rediviva small bitterroot
- Lewisia rediviva bitterroot
- Lewisia serrata saw-toothed lewisia
- Lewisia stebbinsii stebbins' lewisia
- Lewisia triphylla three-leaved lewisia
- Ligustrum japonicum japanese privet
- Ligustrum lucidum chinese privet
- Ligustrum ovalifolium california privet
- Lilaeopsis masonii mason's lilaeopsis
- Lilium bolanderi bolander's lily
- Lilium columbianum columbia lily
- Lilium humboldtii humboldt lily
- Lilium humboldtii ocellated humboldt lily
- Lilium kelleyanum kelley's lily
- Lilium kelloggii kellogg's lily
- Lilium maritimum coast lily
- Lilium occidentale western lily
- Lilium pardalinum leopard lily
- Lilium pardalinum pitkin marsh lily
- Lilium pardalinum shasta lily
- Lilium pardalinum vollmer's lily
- Lilium pardalinum wiggins' lily
- Lilium parryi lemon lily
- Lilium parvum alpine lily sierra tiger lily
- Lilium rubescens redwood lily
- Lilium washingtonianum purple-flowered washington lily
- Lilium washingtonianum washington lily
- Limnanthes bakeri baker's meadowfoam
- Limnanthes douglasii point reyes meadowfoam
- Limnanthes floccosa bellinger's meadowfoam
- Limnanthes floccosa butte county meadowfoam
- Limnanthes floccosa woolly meadowfoam
- Limnanthes vinculans sebastopol meadowfoam
- Limnobium spongia american frogbit
- Limonium californicum western marsh-rosemary
- Limosella australis delta mudwort
- Linanthus arenicola sand linanthus
- Linanthus bellus desert beauty
- Linanthus californicus prickly phlox
- Linanthus concinnus san gabriel linanthus
- Linanthus dichotomus evening snow
- Linanthus jaegeri san jacinto linanthus
- Linanthus killipii baldwin lake linanthus
- Linanthus maculatus little san bernardino mountains linanthus
- Linanthus orcuttii orcutt's linanthus
- Linanthus pungens granite gilia
- Linaria dalmatica dalmatian toadflax
- Linaria vulgaris butter-and-eggs
- Linum puberulum plains flax
- Listera banksiana northwest twayblade
- Listera convallarioides broad-leaved twayblade
- Listera cordata heart-leaved twayblade
- Lithophragma maximum san clemente island woodland star
- Lithospermum arvense gromwell
- Lithospermum californicum california stoneseed
- Lithospermum incisum plains stoneseed
- Lithospermum ruderale western stoneseed
- Lobelia cardinalis cardinal flower
- Loeflingia squarrosa spreading pygmyleaf
- Loeseliastrum depressum depressed standing-cypress
- Loeseliastrum matthewsii desert calico
- Logfia arizonica arizona cottonrose
- Logfia depressa hierba limpia
- Logfia filaginoides california cottonrose
- Logfia gallica daggerleaf cottonrose
- Lomatium canbyi canby's lomatium
- Lomatium congdonii congdon's lomatium
- Lomatium engelmannii engelmann's lomatium
- Lomatium foeniculaceum inyo lomatium
- Lomatium foeniculaceum macdougal's lomatium
- Lomatium grayi gray's lomatium
- Lomatium hendersonii henderson's lomatium
- Lomatium hooveri hoover's lomatium
- Lomatium howellii howell's lomatium
- Lomatium insulare san nicolas island lomatium
- Lomatium martindalei coast range lomatium
- Lomatium observatorium mount hamilton lomatium
- Lomatium parvifolium small-leaved lomatium
- Lomatium peckianum peck's lomatium
- Lomatium ravenii raven's lomatium
- Lomatium repostum napa lomatium
- Lomatium rigidum stiff lomatium
- Lomatium shevockii owens peak lomatium
- Lomatium stebbinsii stebbins' lomatium
- Lomatium tracyi tracy's lomatium
- Lonicera ciliosa orange honeysuckle
- Lonicera involucrata twinberry
- Lonicera japonica japanese honeysuckle
- Lonicera subspicata santa barbara honeysuckle
- Lotus corniculatus bird's-foot trefoil
- Ludwigia grandiflora large-flowered primrose-willow
- Ludwigia hexapetala uruguayan primrose-willow
- Luma apiculata arrayan temu
- Lupinus albifrons abrams' lupine
- Lupinus antoninus anthony peak lupine
- Lupinus arboreus yellow bush lupine
- Lupinus arbustus spur lupine
- Lupinus arizonicus arizona lupine
- Lupinus benthamii spider lupine
- Lupinus bicolor miniature lupine
- Lupinus brevicaulis sand lupine
- Lupinus cervinus santa lucia lupine
- Lupinus citrinus orange lupine
- Lupinus citrinus mariposa lupine
- Lupinus concinnus bajada lupine
- Lupinus constancei the lassics lupine
- Lupinus dalesiae quincy lupine
- Lupinus duranii mono lake lupine
- Lupinus elatus silky lupine
- Lupinus elmeri south fork mountain lupine
- Lupinus excubitus interior bush lupine
- Lupinus excubitus mountain springs bush lupine
- Lupinus excubitus grape soda lupine
- Lupinus gracilentus slender lupine
- Lupinus guadalupensis guadalupe island lupine
- Lupinus hirsutissimus stinging lupine
- Lupinus holmgrenianus holmgrens' lupine
- Lupinus lapidicola heller's mount eddy lupine
- Lupinus latifolius bearded lupine
- Lupinus lepidus hockett meadows lupine
- Lupinus lepidus stemless lupine
- Lupinus lepidus dwarf lupine
- Lupinus ludovicianus san luis obispo county lupine
- Lupinus luteolus butter lupine
- Lupinus magnificus coso mountains lupine
- Lupinus magnificus panamint mountains lupine
- Lupinus microcarpus chick lupine
- Lupinus milo-bakeri milo baker's lupine
- Lupinus nevadensis nevada lupine
- Lupinus nipomensis nipomo mesa lupine
- Lupinus odoratus mojave lupine
- Lupinus pachylobus big pod lupine
- Lupinus padre-crowleyi father crowley's lupine
- Lupinus peirsonii peirson's lupine
- Lupinus pusillus intermontane lupine
- Lupinus sericatus cobb mountain lupine
- Lupinus shockleyi desert lupine
- Lupinus sparsiflorus coulter's lupine
- Lupinus spectabilis shaggyhair lupine
- Lupinus stiversii harlequin lupine
- Lupinus succulentus arroyo lupine
- Lupinus tidestromii tidestrom's lupine
- Lupinus tracyi tracy's lupine
- Lupinus uncialis lilliput lupine
- Lychnis coronaria rose campion
- Lycium barbarum matrimony vine
- Lycium brevipes santa catalina island desert-thorn
- Lycium californicum california box-thorn
- Lycium parishii parish's desert-thorn
- Lycium verrucosum san nicolas island desert-thorn
- Lycopersicon esculentum tomato
- Lycopodiella inundata inundated bog club-moss
- Lycopodium clavatum running-pine
- Lycopus uniflorus northern bugleweed
- Lyonothamnus floribundus santa cruz island ironwood
- Lyonothamnus floribundus santa catalina island ironwood
- Lyrocarpa coulteri coulter's lyrepod
- Lysichiton americanus yellow skunk-cabbage
- Lysimachia arvensis scarlet pimpernel
- Lysimachia europaea arctic starflower
- Lysimachia latifolia pacific starflower
- Lysimachia maritima sea milkwort
- Lysimachia minima chaffweed
- Lysimachia monelli flaxleaf pimpernel
- Lysimachia nummularia creeping-jenny
- Lysimachia thyrsiflora tufted loosestrife
- Lythrum californicum california loosestrife
- Lythrum salicaria purple loosestrife
- Madia elegans common madia
- Madia glomerata mountain tarweed
- Madia gracilis gumweed
- Madia radiata showy golden madia
- Madia sativa coast tarweed
- Malacothamnus abbottii abbott's bush-mallow
- Malacothamnus aboriginum indian valley bush-mallow
- Malacothamnus clementinus san clemente island bush-mallow
- Malacothamnus davidsonii davidson's bush-mallow
- Malacothamnus fasciculatus santa catalina island bush-mallow
- Malacothamnus fasciculatus santa cruz island bush-mallow
- Malacothamnus fasciculatus chaparral mallow
- Malacothamnus hallii hall's bush-mallow
- Malacothamnus jonesii jones' bush-mallow
- Malacothamnus palmeri carmel valley bush-mallow
- Malacothamnus palmeri santa lucia bush-mallow
- Malacothrix coulteri snake's-head
- Malacothrix foliosa wavy-leaved malacothrix
- Malacothrix foliosa leafy malacothrix
- Malacothrix foliosa philbrick's malacothrix
- Malacothrix foliosa many-headed malacothrix
- Malacothrix glabrata desert dandelion
- Malacothrix incana dunedelion
- Malacothrix indecora santa cruz island malacothrix
- Malacothrix junakii junak's malacothrix
- Malacothrix phaeocarpa dusky-fruited malacothrix
- Malacothrix saxatilis carmel valley malacothrix
- Malacothrix saxatilis cliff malacothrix
- Malacothrix similis mexican malacothrix
- Malacothrix squalida island malacothrix
- Malaxis monophyllos white bog adder's-mouth
- Malosma laurina laurel sumac
- Malperia tenuis brown turbans
- Malus fusca oregon crab apple
- Malus pumila apple
- Malva arborea tree mallow
- Malva assurgentiflora island mallow
- Malva neglecta common mallow
- Malva nicaeensis bull mallow
- Malva parviflora cheeseweed little mallow
- Malva pseudolavatera cretan mallow
- Malva sylvestris high mallow
- Malva verticillata crisped mallow curled mallow
- Malvella leprosa alkali-mallow white-weed
- Mammillaria grahamii graham's fishhook cactus
- Marah fabacea california man-root
- Marah horrida sierra man-root
- Marah macrocarpa chilicothe
- Marah oregana coast man-root
- Marah watsonii taw man-root
- Marina orcuttii california marina
- Matelea parvifolia spearleaf
- Matricaria chamomilla german chamomile
- Matricaria discoidea pineapple weed rayless chamomile
- Matricaria occidentalis valley mayweed
- Maurandella antirrhiniflora violet twining snapdragon
- Mauranthemum paludosum mini-marguerite
- Maytenus boaria maiten tree
- Meconella oregana oregon meconella
- Medicago arabica burclover spotted burclover
- Medicago lupulina black medick
- Medicago minima burclover
- Medicago polymorpha california burclover
- Medicago rigidula tifton medick tifton burclover
- Medicago sativa alfalfa
- Medicago scutellata snail medick
- Medicago truncatula barrel medick barrel clover
- Melaleuca citrina crimson bottlebrush
- Melaleuca viminalis weeping bottlebrush
- Melia azedarach china berry persian lilac
- Melica aristata awned melic
- Melica bulbosa oniongrass
- Melica californica california melic
- Melica frutescens woody melic
- Melica fugax little melic
- Melica geyeri geyer's oniongrass
- Melica imperfecta little california melica
- Melica spectabilis purple oniongrass
- Melica stricta rock melic
- Melica subulata alaskan oniongrass
- Melica torreyana torrey's melic
- Melilotus albus white sweetclover
- Melilotus indicus sourclover
- Melilotus officinalis yellow sweetclover
- Melinis repens natal grass ruby grass
- Melissa officinalis lemon balm
- Menodora scabra rough menodora
- Mentha ×gracilis scotch spearmint
- Mentha ×piperita peppermint
- Mentha ×rotundifolia apple mint
- Mentha ×smithiana redstem mint
- Mentha ×villosa apple mint
- Mentha aquatica watermint
- Mentha arvensis field mint
- Mentha canadensis american cornmint japanese peppermint
- Mentha pulegium pennyroyal
- Mentha spicata spearmint
- Mentha suaveolens pineapple mint
- Mentzelia eremophila solitary blazing star
- Mentzelia hirsutissima hairy stickleaf
- Mentzelia inyoensis inyo blazing star
- Mentzelia polita polished blazing star
- Mentzelia pterosperma wing-seed blazing star
- Mentzelia puberula darlington's blazing star
- Mentzelia torreyi torrey's blazing star
- Mentzelia tricuspis spiny-hair blazing star
- Mentzelia tridentata creamy blazing star
- Menziesia ferruginea mock azalea
- Mertensia bella oregon lungwort
- Mertensia ciliata streamside bluebell
- Mertensia cusickii toiyabe bluebells
- Mertensia longiflora long bluebells
- Mertensia oblongifolia beautiful sagebrush bluebells
- Mertensia oblongifolia sagebrush bluebells
- Mertensia oblongifolia sagebrush bluebell
- Mesembryanthemum crystallinum crystalline iceplant
- Mesembryanthemum nodiflorum slender-leaved iceplant
- Micranthes howellii howell's saxifrage
- Micromonolepis pusilla dwarf monolepis
- Micropus amphibolus mount diablo cottonseed
- Micropus californicus cottontop
- Micropus californicus q-tips
- Microseris borealis northern microseris
- Microseris douglasii small-flowered microseris
- Microseris laciniata detling's silverpuffs
- Microseris paludosa marsh microseris
- Microseris sylvatica sylvan microseris
- Mimulus clevelandii cleveland's bush monkeyflower
- Mimulus cusickii cusick's monkeyflower
- Mimulus evanescens ephemeral monkeyflower
- Mimulus exiguus san bernardino mountains monkeyflower
- Mimulus filicaulis slender-stemmed monkeyflower
- Mimulus fremontii vandenberg monkeyflower
- Mimulus glaucescens shield-bracted monkeyflower
- Mimulus gracilipes slender-stalked monkeyflower
- Mimulus inconspicuus small-flowered monkeyflower
- Mimulus johnstonii johnston's monkeyflower
- Mimulus laciniatus cut-leaved monkeyflower
- Mimulus mohavensis mojave monkeyflower
- Mimulus moschatus musk monkeyflower
- Mimulus norrisii kaweah monkeyflower
- Mimulus nudatus bare monkeyflower
- Mimulus parryi parry's monkeyflower
- Mimulus pictus calico monkeyflower
- Mimulus pulchellus yellow-lip pansy monkeyflower
- Mimulus purpureus little purple monkeyflower
- Mimulus pygmaeus egg lake monkeyflower
- Mimulus rupicola death valley monkeyflower
- Mimulus shevockii kelso creek monkeyflower
- Mimulus traskiae santa catalina island monkeyflower
- Minuartia californica california sandwort
- Minuartia cismontana cismontane minuartia
- Minuartia decumbens the lassics sandwort
- Minuartia douglasii douglas' stitchwort
- Minuartia howellii howell's sandwort
- Minuartia nuttallii nuttall's sandwort
- Minuartia obtusiloba alpine sandwort
- Minuartia pusilla annual sandwort
- Minuartia rosei peanut sandwort
- Minuartia rubella reddish sandwort
- Minuartia stolonifera scott mountain sandwort
- Minuartia stricta bog sandwort
- Mirabilis coccinea red four o'clock
- Mirabilis greenei greene's four o'clock
- Mirabilis laevis wishbone bush
- Mirabilis tenuiloba slender-lobed four o'clock
- Modiola caroliniana modiola
- Moehringia macrophylla large-leaved sandwort
- Moenchia erecta upright chickweed
- Mohavea confertiflora ghost flower
- Monarda pectinata plains bee balm
- Monardella australis gray monardella
- Monardella australis jokerst's monardella
- Monardella beneolens sweet-smelling monardella
- Monardella breweri mustang mint
- Monardella candicans sierra monardella
- Monardella follettii follett's monardella
- Monardella hypoleuca felt-leaved monardella
- Monardella leucocephala merced monardella
- Monardella linoides tehachapi monardella
- Monardella macrantha hall's monardella
- Monardella odoratissima coyote-mint
- Monardella palmeri palmer's monardella
- Monardella pringlei pringle's monardella
- Monardella purpurea siskiyou monardella
- Monardella robisonii robison's monardella
- Monardella saxicola rock monardella
- Monardella stebbinsii stebbins' monardella
- Monardella stoneana jennifer's monardella
- Monardella undulata crisp monardella
- Monardella undulata san luis obispo monardella
- Monardella venosa veiny monardella
- Monardella villosa coyote-mint
- Monardella viminea willowy monardella
- Monardella viridis green monardella
- Moneses uniflora woodnymph
- Monolepis nuttalliana nuttall's poverty weed
- Monolopia congdonii san joaquin woollythreads
- Monolopia gracilens woodland woollythreads
- Monolopia lanceolata common hillside daisy
- Monotropa hypopitys pinesap
- Monotropa uniflora ghost-pipe
- Montia chamissoi toad lily
- Montia fontana water chickweed blinks
- Montia howellii howell's montia
- Morella californica wax myrtle
- Mortonia utahensis utah mortonia
- Morus alba white mulberry
- Mucronea californica california spineflower
- Mucronea perfoliata perfoliate spineflower
- Muehlenbeckia complexa maidenhair vine
- Muehlenbeckia hastulata wirevine
- Muhlenbergia alopecuroides wolftail
- Muhlenbergia andina foxtail muhly
- Muhlenbergia appressa appressed muhly
- Muhlenbergia arsenei tough muhly
- Muhlenbergia asperifolia scratch grass
- Muhlenbergia californica california muhly
- Muhlenbergia filiformis pull-up muhly
- Muhlenbergia fragilis delicate muhly
- Muhlenbergia jonesii jones' muhly
- Muhlenbergia microsperma littleseed muhly
- Muhlenbergia montana mountain muhly
- Muhlenbergia pauciflora few-flowered muhly
- Muhlenbergia richardsonis mat muhly
- Muhlenbergia rigens deer grass
- Muhlenbergia schreberi nimblewell
- Muhlenbergia utilis aparejo grass
- Muilla coronata crowned muilla
- Muilla maritima common muilla
- Munroa squarrosa false buffalograss
- Munzothamnus blairii blair's munzothamnus
- Myoporum laetum myoporum ngaio tree
- Myosotis discolor changing forget-me-not
- Myosotis latifolia broadleaved forget-me-not
- Myosotis laxa bay forget-me-not
- Myosotis micrantha small-flowered forget-me-not
- Myosotis scorpioides water forget-me-not
- Myosotis verna early forget-me-not
- Myrica hartwegii sierra sweet bay
- Myriophyllum aquaticum parrot's feather
- Myriophyllum hippuroides western water-milfoil
- Myriophyllum quitense andean water-milfoil
- Myriophyllum sibiricum siberian water-milfoil
- Myriophyllum spicatum eurasian water-milfoil
- Myriophyllum verticillatum whorled water-milfoil
- Myriopteris clevelandii cleveland's lip fern
- Myriopteris cooperae cooper's lip fern
- Myriopteris covillei coville's lip fern
- Myriopteris gracilis slender lip fern
- Myriopteris gracillima lace lip fern
- Myriopteris intertexta coastal lip fern
- Myriopteris newberryi newberry's lip fern
- Myriopteris parryi parry's lip fern
- Myriopteris viscida viscid lace fern
- Myriopteris wootonii wooton's lip fern
- Myrtus communis myrtle
- Najas flexilis slender water-nymph
- Najas gracillima thread-leaved water-nymph
- Najas graminea rice-field water-nymph
- Najas guadalupensis common water-nymph
- Najas marina holly-leaved water-nymph
- Nama dichotoma forked purple mat
- Nama stenocarpa mud nama
- Narcissus pseudonarcissus daffodil
- Narcissus tazetta paper white
- Nasturtium gambelii gambel's water cress
- Nasturtium officinale water cress
- Navarretia cotulifolia cotula navarretia
- Navarretia divaricata mountain navarretia
- Navarretia eriocephala hoary navarretia
- Navarretia fossalis spreading navarretia
- Navarretia gowenii lime ridge navarretia
- Navarretia heterandra tehama navarretia
- Navarretia jepsonii jepson's navarretia
- Navarretia leucocephala baker's navarretia
- Navarretia leucocephala few-flowered navarretia
- Navarretia leucocephala many-flowered navarretia
- Navarretia linearifolia pinnate-leaved navarretia
- Navarretia myersii small pincushion navarretia
- Navarretia myersii pincushion navarretia
- Navarretia nigelliformis adobe navarretia
- Navarretia nigelliformis shining navarretia
- Navarretia ojaiensis ojai navarretia
- Navarretia peninsularis baja navarretia
- Navarretia prolifera yellow bur navarretia
- Navarretia prostrata prostrate vernal pool navarretia
- Navarretia rosulata marin county navarretia
- Navarretia setiloba piute mountains navarretia
- Navarretia squarrosa skunkweed
- Navarretia subuligera awl-leaved navarretia
- Navarretia tagetina marigold navarretia
- Nemacaulis denudata coast woolly-heads
- Nemacaulis denudata slender cottonheads
- Nemacladus calcaratus chimney creek nemacladus
- Nemacladus gracilis slender nemacladus
- Nemacladus secundiflorus robbins' nemacladus
- Nemacladus secundiflorus large-flowered nemacladus
- Nemacladus twisselmannii twisselmann's nemacladus
- Nemophila breviflora great basin nemophila
- Nemophila maculata fivespot
- Nemophila menziesii baby blue-eyes
- Nemophila parviflora oak-leaved nemophila
- Neostapfia colusana colusa grass
- Nepeta cataria catnip
- Nerium oleander common oleander
- Neviusia cliftonii shasta snow-wreath
- Nicandra physalodes apple of peru shoo-fly plant
- Nicolletia occidentalis hole-in-the-sand plant
- Nicotiana glauca tree tobacco
- Nitrophila mohavensis amargosa nitrophila
- Noccaea fendleri kneeland prairie pennycress
- Nolina cismontana chaparral nolina
- Nolina interrata dehesa nolina
- Nothocalais alpestris alpine lake false-dandelion
- Nothocalais troximoides sagebrush false-dandelion
- Notholaena californica california cloak-fern
- Nuttallanthus texanus blue toadflax
- Nymphaea mexicana yellow or banana waterlily
- Nymphaea odorata fragrant or white waterlily
- Nymphoides peltata water fringe
- Oenothera biennis common evening-primrose
- Oenothera californica eureka dunes evening-primrose
- Oenothera cavernae cave evening-primrose
- Oenothera cespitosa cespitose evening-primrose
- Oenothera cespitosa fragrant evening-primrose
- Oenothera curtiflora lizard-tail velvet weed
- Oenothera deltoides antioch dunes evening-primrose
- Oenothera deltoides devil's lantern lion-in-a-cage basket evening-primrose
- Oenothera longissima long-stem evening-primrose
- Oenothera sinuosa wavy-leaved gaura
- Oenothera suffrutescens wild honeysuckle linda tarde
- Oenothera wolfii wolf's evening-primrose
- Olneya tesota ironwood
- Olsynium douglasii purple-eyed-grass grass widows
- Oncosiphon piluliferum stinknet
- Onobrychis viciifolia sanfoin
- Onopordum acanthium scotch thistle
- Onopordum illyricum illyrian thistle
- Onopordum tauricum taurian thistle
- Ophioglossum californicum california adder's-tongue
- Ophioglossum pusillum northern adder's-tongue
- Opuntia basilaris beavertail
- Opuntia basilaris short-joint beavertail
- Opuntia basilaris bakersfield cactus
- Opuntia chlorotica pancake prickly-pear
- Opuntia engelmannii engelmann prickly-pear
- Opuntia ficus-indica mission prickly-pear
- Opuntia fragilis brittle prickly-pear
- Opuntia leucotricha nopal duraznillo
- Opuntia microdasys bunny ears
- Opuntia phaeacantha brown-spined prickly-pear
- Opuntia polyacantha mojave prickly-pear grizzly bear prickly-pear
- Opuntia polyacantha porcupine prickly-pear
- Opuntia polyacantha starvation prickly-pear
- Opuntia robusta nopal tapon
- Orcuttia californica california orcutt grass
- Orcuttia inaequalis san joaquin valley orcutt grass
- Orcuttia pilosa hairy orcutt grass
- Orcuttia tenuis slender orcutt grass
- Orcuttia viscida sacramento orcutt grass
- Oreonana purpurascens purple mountain-parsley
- Oreonana vestita woolly mountain-parsley
- Oreostemma elatum tall alpine-aster
- Origanum ×majoricum italian oregano hardy sweet marjoram
- Origanum vulgare oregano
- Ornithopus sativus common birdsfoot
- Ornithostaphylos oppositifolia baja california birdbush
- Orobanche fasciculata clustered broomrape
- Orobanche parishii short-lobed broomrape
- Orobanche uniflora naked broomrape
- Orobanche valida howell's broomrape
- Orobanche valida rock creek broomrape
- Orthilia secunda one-sided wintergreen
- Orthocarpus cuspidatus siskiyou mountains orthocarpus
- Orthocarpus pachystachyus shasta orthocarpus
- Oryctes nevadensis nevada oryctes
- Osmadenia tenella osmadenia
- Osmorhiza depauperata blunt-fruited sweet-cicely
- Oxalis articulata windowbox wood-sorrel
- Oxalis bowiei bowie's wood-sorrel
- Oxalis californica california wood-sorrel
- Oxalis incarnata crimson wood-sorrel
- Oxalis micrantha dwarf wood-sorrel
- Oxalis oregana redwood sorrel
- Oxalis pes-caprae bermuda buttercup
- Oxalis purpurea purple wood-sorrel
- Oxalis suksdorfii suksdorf's wood-sorrel
- Oxytheca dendroidea tree-like puncturebract
- Oxytheca perfoliata round-leaf puncturebract
- Oxytheca watsonii watson's oxytheca
- Oxytropis borealis sticky oxytrope
- Oxytropis borealis boreal locoweed
- Oxytropis deflexa blue pendent-pod oxytrope
- Oxytropis oreophila rock-loving oxytrope
- Oxytropis parryi parry's oxytrope
- Packera bernardina san bernardino ragwort
- Packera bolanderi seacoast ragwort
- Packera breweri brewer's ragwort
- Packera cana woolly groundsel
- Packera clevelandii cleveland's ragwort
- Packera eurycephala widehead groundsel
- Packera eurycephala lewis rose's ragwort
- Packera ganderi gander's ragwort
- Packera greenei flame ragwort
- Packera hesperia western ragwort
- Packera indecora rayless mountain ragwort
- Packera ionophylla tehachapi ragwort
- Packera layneae layne's ragwort
- Packera macounii siskiyou mountains ragwort
- Packera multilobata lobeleaf groundsel
- Packera pauciflora alpine groundsel
- Packera pseudaurea false-gold groundsel
- Packera streptanthifolia rocky mountain groundsel
- Packera subnuda cleftleaf groundsel
- Packera werneriifolia hoary groundsel
- Palafoxia arida giant spanish-needle
- Pallenis maritima gold coin
- Panicum acuminatum pacific panic grass
- Panicum acuminatum geysers panicum
- Panicum antidotale blue panic grass
- Panicum capillare witch grass
- Panicum dichotomiflorum fall panic grass
- Panicum hillmanii hillman's panic grass
- Panicum hirticaule roughstalk witch grass
- Panicum miliaceum broom corn millet
- Panicum oligosanthes scribner's panic grass
- Panicum rigidulum redtop panicum
- Panicum urvilleanum silky panic grass
- Papaver californicum fire poppy
- Papaver heterophyllum wind poppy
- Papaver hybridum rough poppy
- Papaver rhoeas corn poppy
- Papaver somniferum opium poppy
- Parkinsonia aculeata mexican palo verde
- Parkinsonia florida blue palo verde
- Parkinsonia microphylla little-leaved palo verde
- Parnassia cirrata san bernardino grass-of-parnassus
- Parnassia cirrata cascade grass-of-parnassus
- Parnassia parviflora small-flowered grass-of-parnassus
- Paronychia ahartii ahart's nailwort ahart's paronychia
- Parthenocissus inserta woodbine
- Paspalum dilatatum dallis grass
- Paspalum distichum knot grass
- Paspalum vaginatum seashore paspalum
- Passiflora caerulea blue passion flower
- Passiflora tarminiana banana passion fruit
- Paxistima myrsinites oregon boxwood
- Pectis papposa chinch-weed
- Pectocarya heterocarpa mixed-nut pectocarya
- Pectocarya linearis narrow-toothed pectocarya
- Pectocarya penicillata northern pectocarya
- Pectocarya peninsularis baja pectocarya
- Pectocarya platycarpa wide-toothed pectocarya
- Pectocarya pusilla little pectocarya
- Pectocarya recurvata arched-nut pectocarya
- Pectocarya setosa round-nut pectocarya
- Pedicularis attollens little elephant's head
- Pedicularis bracteosa yellowish lousewort
- Pedicularis centranthera great basin lousewort
- Pedicularis contorta curved-beak lousewort
- Pedicularis crenulata scalloped-leaved lousewort
- Pedicularis densiflora warrior's plume
- Pedicularis dudleyi dudley's lousewort
- Pedicularis groenlandica elephant's head
- Pedicularis howellii howell's lousewort
- Pedicularis racemosa leafy lousewort
- Pediomelum castoreum beaver dam breadroot
- Peganum harmala african rue syrian rue
- Pelargonium ×hortorum fish geranium
- Pelargonium panduriforme oak-leaved geranium
- Pelargonium peltatum ivy geranium
- Pelargonium zonale horseshoe geranium
- Pellaea andromedifolia coffee fern
- Pellaea brachyptera sierra cliff-brake
- Pellaea breweri brewer's cliff-brake
- Pellaea bridgesii bridges' cliff-brake
- Pellaea mucronata bird's-foot fern
- Pellaea truncata spiny cliff-brake
- Peltandra virginica green arrow arum tuckahoe
- Pennisetum ciliare buffel grass
- Pennisetum clandestinum kikuyu grass
- Pennisetum setaceum crimson fountain grass
- Pennisetum villosum feathertop
- Penstemon albomarginatus white-margined beardtongue (group 4)
- Penstemon barnebyi barneby's beardtongue (group 4)
- Penstemon calcareus limestone beardtongue (group 4)
- Penstemon californicus california beardtongue (group 4)
- Penstemon centranthifolius scarlet bugler (group 4)
- Penstemon cinicola ash beardtongue (group 4)
- Penstemon clevelandii san jacinto beardtongue
- Penstemon deustus hot-rock penstemon (group 4)
- Penstemon filiformis thread-leaved beardtongue (group 2)
- Penstemon fruticiformis amargosa beardtongue
- Penstemon heterodoxus shasta beardtongue
- Penstemon janishiae janish's beardtongue
- Penstemon neotericus plumas county beardtongue (group 2)
- Penstemon newberryi sonoma beardtongue
- Penstemon pahutensis pahute beardtongue (group 1)
- Penstemon papillatus inyo beardtongue (group 2)
- Penstemon personatus closed-throated beardtongue
- Penstemon purpusii snow mountain beardtongue (group 2)
- Penstemon rattanii santa cruz mountains beardtongue
- Penstemon scapoides pinyon beardtongue
- Penstemon stephensii stephens' beardtongue (group 4)
- Penstemon sudans susanville beardtongue
- Penstemon thompsoniae thompson's beardtongue
- Penstemon thurberi thurber's beardtongue (group 4)
- Penstemon tracyi tracy's beardtongue (group 4)
- Penstemon utahensis utah beardtongue
- Pentachaeta aurea allen's pentachaeta
- Pentachaeta aurea golden-rayed pentachaeta
- Pentachaeta bellidiflora white-rayed pentachaeta
- Pentachaeta exilis san benito pentachaeta
- Pentachaeta fragilis fragile pentachaeta
- Pentachaeta lyonii lyon's pentachaeta
- Pentagramma pallida silverback fern
- Pentagramma triangularis goldback fern
- Perideridia bacigalupii bacigalupi's yampah
- Perideridia gairdneri gairdner's yampah
- Perideridia leptocarpa narrow-seeded yampah
- Perideridia parishii parish's yampah
- Perideridia pringlei adobe yampah
- Peritoma arborea bladderpod
- Peritoma jonesii jones' bee plant
- Peritoma lutea yellow bee plant
- Peritoma platycarpa golden bee plant
- Peritoma serrulata rocky mountain bee plant
- Perityle emoryi emory's rock daisy
- Perityle intricata desert rock daisy
- Perityle inyoensis inyo rock daisy
- Perityle megalocephala nevada rock daisy
- Perityle megalocephala small-leaved rock daisy
- Perityle villosa hanaupah rock daisy
- Persea americana avocado
- Persicaria amphibia water smartweed
- Persicaria hydropiper waterpepper
- Persicaria hydropiperoides false waterpepper
- Persicaria lapathifolia willow weed
- Persicaria maculosa lady's thumb
- Persicaria orientalis kiss-me-over-the-garden-gate
- Persicaria pensylvanica pinkweed
- Persicaria wallichii himalayan knotweed
- Petalonyx thurberi death valley sandpaper-plant
- Petasites frigidus western sweet coltsfoot
- Peteria thompsoniae spine-noded milkvetch
- Petradoria pumila rock-goldenrod
- Petroselinum crispum parsley
- Phacelia amabilis saline valley phacelia (group 2)
- Phacelia anelsonii aven nelson's phacelia (group 3)
- Phacelia argentea sand dune phacelia (group 1)
- Phacelia barnebyana barneby's phacelia (group 3)
- Phacelia campanularia desert bluebells (group 3)
- Phacelia coerulea sky-blue phacelia (group 3)
- Phacelia cookei cooke's phacelia (group 3)
- Phacelia exilis transverse range phacelia (group 3)
- Phacelia floribunda many-flowered phacelia (group 2)
- Phacelia greenei scott valley phacelia (group 3)
- Phacelia gymnoclada naked-stemmed phacelia (group 3)
- Phacelia insularis north coast phacelia
- Phacelia insularis northern channel islands phacelia
- Phacelia inundata playa phacelia (group 2)
- Phacelia inyoensis inyo phacelia (group 2)
- Phacelia keckii santiago peak phacelia (group 3)
- Phacelia leonis siskiyou phacelia (group 3)
- Phacelia minor wild canterbury bells (group 3)
- Phacelia mohavensis mojave phacelia (group 3)
- Phacelia monoensis mono county phacelia (group 2)
- Phacelia mustelina death valley round-leaved phacelia (group 3)
- Phacelia nashiana charlotte's phacelia (group 3)
- Phacelia novenmillensis nine mile canyon phacelia (group 3)
- Phacelia orogenes mountain phacelia (group 3)
- Phacelia parishii parish's phacelia (group 3)
- Phacelia peirsoniana peirson's phacelia (group 3)
- Phacelia perityloides jaeger's phacelia
- Phacelia phacelioides mount diablo phacelia (group 3)
- Phacelia pulchella goodding's phacelia (group 3)
- Phacelia sericea blue alpine phacelia (group 1)
- Phacelia stebbinsii stebbins' phacelia (group 3)
- Phacelia stellaris brand's star phacelia (group 2)
- Phacelia vallicola mariposa phacelia (group 3)
- Phalacroseris bolanderi bolander's mock dandelion
- Phalaris angusta timothy canary grass
- Phalaris aquatica harding grass
- Phalaris arundinacea reed canary grass
- Phalaris brachystachys short-spiked canary grass
- Phalaris californica california canary grass
- Phalaris canariensis canary grass
- Phalaris caroliniana carolina canary grass
- Phalaris coerulescens sunol grass
- Phalaris lemmonii lemmon's canary grass
- Phalaris minor little-seeded canary grass
- Phalaris paradoxa hood canary grass
- Phaseolus filiformis slender-stem bean
- Philadelphus lewisii wild mock orange
- Philadelphus microphyllus littleleaf mock orange
- Phleum alpinum alpine timothy mountain timothy
- Phleum pratense cultivated timothy
- Phlox dispersa high sierra phlox
- Phlox dolichantha big bear valley phlox
- Phlox hirsuta yreka phlox
- Phlox muscoides squarestem phlox
- Phoenix canariensis canary island palm
- Phoenix dactylifera date palm
- Pholisma sonorae sand food
- Pholistoma auritum arizona pholistoma
- Pholistoma auritum fiesta flower
- Phoradendron californicum desert mistletoe
- Phoradendron juniperinum juniper or incense cedar mistletoe
- Phoradendron leucarpum american mistletoe
- Phragmites australis common reed
- Phyllostachys aurea fishpole bamboo golden bamboo
- Physalis lobata lobed ground-cherry
- Physalis philadelphica tomatillo
- Physalis viscosa grape ground-cherry
- Physaria chambersii chambers' physaria
- Physaria kingii san bernardino mountains bladderpod
- Physaria ludoviciana silver bladderpod
- Physematium plummerae plummer's woodsia
- Physocarpus alternans nevada ninebark
- Phytolacca americana pokeweed
- Phytolacca heterotepala mexican pokeweed
- Phytolacca icosandra tropical pokeweed
- Picea breweriana brewer spruce
- Picea engelmannii engelmann spruce
- Picea sitchensis sitka spruce
- Pickeringia montana woolly chaparral pea
- Pickeringia montana chaparral pea
- Pilostyles thurberi thurber's pilostyles
- Pinguicula macroceras horned butterwort
- Pinus albicaulis whitebark pine
- Pinus attenuata knobcone pine
- Pinus balfouriana foxtail pine
- Pinus contorta bolander's beach pine
- Pinus contorta shore pine
- Pinus contorta lodgepole pine
- Pinus coulteri coulter pine
- Pinus edulis colorado pinyon
- Pinus flexilis limber pine
- Pinus jeffreyi jeffrey pine
- Pinus lambertiana sugar pine
- Pinus longaeva bristlecone pine
- Pinus monophylla singleleaf pinyon pine
- Pinus monticola western white pine
- Pinus muricata bishop pine
- Pinus ponderosa pacific ponderosa pine
- Pinus ponderosa north plateau ponderosa pine
- Pinus ponderosa washoe pine
- Pinus ponderosa ponderosa pine western yellow pine
- Pinus quadrifolia parry pinyon pine
- Pinus radiata monterey pine
- Pinus sabiniana gray ghost or foothill pine
- Pinus torreyana santa rosa island torrey pine
- Pinus torreyana torrey pine
- Piperia candida white-flowered rein-orchid
- Piperia colemanii coleman's rein-orchid
- Piperia cooperi chaparral rein-orchid
- Piperia elegans point reyes rein-orchid
- Piperia elegans coast piperia elegant piperia
- Piperia elongata chaparral orchid wood rein-orchid
- Piperia leptopetala narrow-petaled rein-orchid
- Piperia michaelii michael's rein-orchid
- Piperia transversa flat spurred piperia
- Piperia unalascensis alaska piperia slender-spire orchid
- Piperia yadonii yadon's rein-orchid
- Pisum sativum common pea
- Pittosporum tobira japanese pittosporum mock orange
- Pittosporum undulatum victorian box mock orange
- Pityopus californicus california pinefoot
- Plagiobothrys acanthocarpus adobe popcornflower
- Plagiobothrys arizonicus arizona popcornflower
- Plagiobothrys austiniae austin's spiny-nut popcornflower
- Plagiobothrys bracteatus bracted popcornflower
- Plagiobothrys canescens valley popcornflower
- Plagiobothrys canescens santa catalina popcornflower
- Plagiobothrys chorisianus choris' popcornflower
- Plagiobothrys chorisianus hickman's popcornflower
- Plagiobothrys chorisianus artist's popcornflower
- Plagiobothrys cognatus cognate popcornflower
- Plagiobothrys collinus california popcornflower
- Plagiobothrys collinus rough-stemmed popcornflower
- Plagiobothrys collinus san diego popcornflower
- Plagiobothrys collinus bear valley popcornflower
- Plagiobothrys cusickii cusick's popcornflower
- Plagiobothrys diffusus san francisco popcornflower
- Plagiobothrys distantiflorus madera popcornflower
- Plagiobothrys fulvus field popcornflower
- Plagiobothrys glaber hairless popcornflower
- Plagiobothrys glyptocarpus cedar ridge popcornflower
- Plagiobothrys glyptocarpus sculptured-nut popcornflower
- Plagiobothrys greenei greene's spiny-nut popcornflower
- Plagiobothrys hispidulus harsh popcornflower
- Plagiobothrys hispidus cascade popcornflower bristly popcornflower
- Plagiobothrys humistratus low popcornflower
- Plagiobothrys hystriculus bearded popcornflower
- Plagiobothrys infectivus dye popcornflower
- Plagiobothrys jonesii mojave popcornflower
- Plagiobothrys kingii northern great basin popcornflower
- Plagiobothrys kingii southern great basin popcornflower
- Plagiobothrys kingii great basin popcornflower
- Plagiobothrys leptocladus alkali plagiobothrys
- Plagiobothrys lithocaryus mayacamas popcornflower
- Plagiobothrys mollis petaluma popcornflower
- Plagiobothrys mollis creeping popcornflower soft popcornflower
- Plagiobothrys nitens shiny-nutlet popcornflower
- Plagiobothrys nothofulvus rusty popcornflower foothill snowdrops
- Plagiobothrys parishii parish's popcornflower
- Plagiobothrys reticulatus fort ross popcornflower
- Plagiobothrys reticulatus tracy's popcornflower
- Plagiobothrys salsus desert popcornflower
- Plagiobothrys scriptus scridgee's popcornflower
- Plagiobothrys shastensis shasta popcornflower
- Plagiobothrys stipitatus showy great valley popcornflower
- Plagiobothrys stipitatus great valley popcornflower
- Plagiobothrys strictus calistoga popcornflower
- Plagiobothrys tenellus pacific popcornflower
- Plagiobothrys tener serpentine popcornflower
- Plagiobothrys tener slender popcornflower
- Plagiobothrys torreyi chaparral popcornflower
- Plagiobothrys torreyi yosemite popcornflower
- Plagiobothrys torreyi high sierra popcornflower
- Plagiobothrys trachycarpus rough-nutlet popcornflower
- Plagiobothrys uncinatus hooked popcornflower
- Plagiobothrys undulatus wavy-stemmed popcornflower
- Plagiobothrys verrucosus forget-me-not popcornflower
- Plantago lanceolata english plantain
- Plantago major common plantain
- Platanthera dilatata white-flowered bog-orchid
- Platanthera sparsiflora sparse-flowered bog-orchid
- Platanthera stricta slender bog-orchid
- Platanthera yosemitensis yosemite bog-orchid
- Platanus ×hispanica london plane tree
- Platanus racemosa western sycamore
- Platystemon californicus cream cups
- Plecostachys serpyllifolia petite-licorice
- Plectritis congesta sea blush
- Pleiacanthus spinosus thorny skeletonweed
- Pleuropogon californicus davy's semaphore grass
- Pleuropogon hooverianus north coast semaphore grass
- Pleuropogon refractus nodding semaphore grass
- Pluchea odorata saltmarsh-fleabane
- Pluchea sericea arrow-weed
- Plumbago auriculata cape leadwort
- Poa abbreviata marsh's blue grass
- Poa abbreviata patterson's blue grass
- Poa abbreviata dwarf blue grass
- Poa annua annual blue grass
- Poa atropurpurea san bernardino blue grass
- Poa compressa canadian blue grass
- Poa confinis beach blue grass
- Poa cusickii skyline blue grass
- Poa diaboli diablo canyon blue grass
- Poa douglasii sand dune blue grass
- Poa fendleriana mutton grass
- Poa fendleriana long-tongue mutton grass
- Poa glauca timberline blue grass
- Poa infirma weak blue grass
- Poa kelloggii kellogg's blue grass
- Poa leptocoma bog blue grass
- Poa lettermanii letterman's blue grass
- Poa macrantha seashore blue grass
- Poa napensis napa blue grass
- Poa nemoralis wood blue grass
- Poa palustris fowl blue grass
- Poa piperi piper's blue grass
- Poa pratensis kentucky blue grass
- Poa rhizomata timber blue grass
- Poa secunda one-sided blue grass
- Poa secunda nevada blue grass
- Poa sierrae sierra blue grass
- Poa tenerrima delicate blue grass
- Poa trivialis rough blue grass
- Poa unilateralis san francisco blue grass
- Podistera nevadensis sierra podistera
- Pogogyne abramsii san diego mesa mint
- Pogogyne clareana santa lucia mint
- Pogogyne douglasii douglas' beardstyle
- Pogogyne floribunda profuse-flowered pogogyne
- Pogogyne nudiuscula otay mesa mint
- Pogogyne serpylloides thymeleaf beardstyle
- Pogogyne zizyphoroides sacramento beardstyle
- Polanisia dodecandra western clammyweed
- Polemonium carneum oregon polemonium
- Polemonium chartaceum mason's sky pilot
- Polemonium eddyense mount eddy sky pilot
- Poliomintha incana frosted mint
- Polycarpon tetraphyllum four-leaved allseed
- Polygala acanthoclada thorny milkwort
- Polygala californica california milkwort
- Polygala cornuta sierra milkwort
- Polygala cornuta fish's milkwort
- Polygala heterorhyncha notch-beaked milkwort
- Polygala intermontana intermountain milkwort
- Polygala subspinosa spiny milkwort
- Polygonum argyrocoleon persian knotweed
- Polygonum austiniae mrs. austin's knotweed
- Polygonum aviculare knotweed knotgrass
- Polygonum bidwelliae bidwell's knotweed
- Polygonum bolanderi bolander's knotweed
- Polygonum douglasii douglas' knotweed
- Polygonum hickmanii scotts valley polygonum
- Polygonum majus wiry knotweed
- Polygonum marinense marin knotweed
- Polygonum parryi parry's or prickly knotweed
- Polygonum polygaloides modoc county knotweed
- Polygonum polygaloides polygala knotweed
- Polygonum ramosissimum bushy knotweed
- Polypodium californicum california polypody
- Polypodium glycyrrhiza licorice fern
- Polypodium hesperium western polypody
- Polypodium scouleri leather-leaf fern
- Polypogon australis chilean beard grass
- Polypogon interruptus ditch beard grass
- Polypogon maritimus mediterranean beard grass
- Polypogon monspeliensis annual beard grass rabbitfoot grass
- Polypogon viridis water beard grass
- Polystichum kruckebergii kruckeberg's sword fern
- Polystichum lonchitis holly fern
- Polystichum munitum western sword fern
- Populus alba white poplar
- Populus angustifolia narrow-leaved cottonwood
- Populus fremontii alamo or fremont cottonwood
- Populus nigra black poplar lombardy poplar
- Populus tremuloides quaking aspen
- Populus trichocarpa black cottonwood
- Porophyllum gracile odora slender poreleaf
- Porophyllum ruderale yerba porosa
- Portulaca halimoides desert portulaca
- Portulaca oleracea purslane
- Potamogeton amplifolius broad-leaved pondweed
- Potamogeton crispus crisp-leaved pondweed
- Potamogeton diversifolius diverse-leaved pondweed
- Potamogeton epihydrus nuttall's ribbon-leaved pondweed
- Potamogeton foliosus fibrous pondweed
- Potamogeton foliosus leafy pondweed
- Potamogeton gramineus grass-leaved pondweed
- Potamogeton illinoensis shining pondweed
- Potamogeton natans floating-leaved pondweed
- Potamogeton nodosus long-leaved pondweed
- Potamogeton praelongus white-stemmed pondweed
- Potamogeton pusillus small pondweed
- Potamogeton richardsonii richardson's pondweed
- Potamogeton robbinsii robbins' pondweed
- Potamogeton zosteriformis eel-grass pondweed
- Potentilla anglica english cinquefoil
- Potentilla anserina common silverweed
- Potentilla anserina pacific silverweed
- Potentilla basaltica black rock potentilla
- Potentilla biennis biennial or greene's cinquefoil
- Potentilla breweri brewer's cinquefoil
- Potentilla bruceae bruce's cinquefoil
- Potentilla concinna early cinquefoil
- Potentilla cristae crested potentilla
- Potentilla drummondii drummond's cinquefoil
- Potentilla flabellifolia fan-foil fanleaf cinquefoil
- Potentilla glaucophylla blueleaf cinquefoil
- Potentilla gracilis slender cinquefoil
- Potentilla grayi gray's cinquefoil
- Potentilla hickmanii hickman's cinquefoil
- Potentilla jepsonii jepson's cinquefoil
- Potentilla millefolia feather cinquefoil
- Potentilla morefieldii morefield's cinquefoil
- Potentilla multijuga ballona cinquefoil
- Potentilla newberryi newberry's cinquefoil
- Potentilla norvegica norwegian or rough cinquefoil
- Potentilla pensylvanica prairie cinquefoil
- Potentilla pseudosericea mono cinquefoil
- Potentilla pulcherrima beautiful cinquefoil
- Potentilla recta sulphur cinquefoil
- Potentilla rimicola cliff cinquefoil
- Potentilla rivalis brook or river cinquefoil
- Potentilla uliginosa cunningham marsh cinquefoil
- Potentilla wheeleri wheeler's cinquefoil
- Poteridium annuum western burnet
- Poterium sanguisorba garden burnet
- Prenanthella exigua brightwhite
- Primula hendersonii mosquito bill(s) sailor caps
- Primula jeffreyi sierra shooting star
- Primula pauciflora beautiful shooting star
- Primula suffrutescens sierra primrose
- Primula tetrandra alpine shooting star
- Proboscidea althaeifolia desert unicorn-plant
- Prosartes parvifolia siskiyou bells
- Prosopis glandulosa honey mesquite
- Prosopis pubescens screw bean tornillo
- Prosopis strombulifera argentine screwbean
- Prunus andersonii desert peach
- Prunus cerasifera cherry plum
- Prunus dulcis almond
- Prunus emarginata bitter cherry
- Prunus eremophila mojave desert plum
- Prunus fasciculata sand almond
- Prunus fasciculata desert almond
- Prunus fremontii desert apricot
- Prunus ilicifolia islay holly-leafed cherry
- Prunus ilicifolia catalina cherry
- Prunus persica peach
- Prunus subcordata pacific plum sierra plum
- Prunus virginiana western choke cherry
- Psathyrotes ramosissima turtleback
- Pseudobahia bahiifolia hartweg's golden sunburst
- Pseudobahia heermannii foothill sunburst brittlestem
- Pseudobahia peirsonii san joaquin adobe sunburst
- Pseudognaphalium leucocephalum white rabbit-tobacco
- Pseudognaphalium macounii macoun's everlasting
- Pseudorontium cyathiferum deep canyon snapdragon
- Pseudostellaria jamesiana tuber starwort
- Pseudostellaria sierrae sierra starwort
- Pseudotrillium rivale brook wakerobin
- Pseudotsuga macrocarpa bigcone douglas-fir bigcone spruce
- Pseudotsuga menziesii douglas-fir
- Psilocarphus brevissimus dwarf woollyheads
- Psilocarphus brevissimus delta woolly-marbles
- Psilocarphus chilensis round woolly-marbles
- Psilocarphus elatior tall woolly-marbles
- Psilocarphus oregonus oregon woollyheads
- Psilocarphus tenellus slender woolly-marbles
- Psorothamnus arborescens mojave indigo-bush
- Psorothamnus fremontii narrow-leaved psorothamnus
- Psorothamnus fremontii fremont's dalea
- Psorothamnus schottii indigo-bush
- Psorothamnus spinosus smoke tree
- Pteris cretica cretan brake
- Pteris vittata ladder brake
- Pterocarya stenoptera chinese wingnut
- Puccinellia distans european alkali grass
- Puccinellia howellii howell's alkali grass
- Puccinellia lemmonii lemmon's alkali grass
- Puccinellia nutkaensis alaska alkali grass
- Puccinellia nuttalliana nuttall's alkali grass
- Puccinellia parishii parish's alkali grass
- Puccinellia pumila dwarf alkali grass
- Purshia stansburyana cliffrose
- Purshia tridentata bitterbrush
- Pyracantha angustifolia slender or woolly firethorn
- Pyracantha atalantioides sichuan firethorn
- Pyracantha coccinea firethorn or scarlet firethorn
- Pyracantha crenulata himalayan or nepal firethorn
- Pyracantha fortuneana chinese firethorn
- Pyracantha koidzumii taiwan firethorn
- Pyrola aphylla leafless wintergreen
- Pyrola asarifolia bog wintergreen
- Pyrola asarifolia long-bracted wintergreen
- Pyrola chlorantha green-flowered wintergreen
- Pyrola crypta cryptic wintergreen
- Pyrola dentata toothed wintergreen
- Pyrola minor lesser wintergreen
- Pyrola picta white-veined wintergreen
- Pyrrocoma apargioides alpine flames
- Pyrrocoma carthamoides large-flowered goldenweed
- Pyrrocoma hirta tacky goldenweed
- Pyrrocoma lanceolata lance-leaved goldenweed
- Pyrrocoma lucida sticky pyrrocoma
- Pyrrocoma racemosa del norte pyrrocoma
- Pyrrocoma racemosa pine pyrrocoma
- Pyrrocoma racemosa clustered goldenweed
- Pyrrocoma uniflora bear valley pyrrocoma
- Pyrrocoma uniflora plantain goldenweed
- Pyrus communis common pear
- Quercus ×macdonaldii macdonald oak
- Quercus agrifolia coast live oak encina
- Quercus berberidifolia scrub oak
- Quercus cedrosensis cedros island oak
- Quercus chrysolepis maul oak canyon live oak
- Quercus cornelius-mulleri muller's oak
- Quercus douglasii blue oak
- Quercus dumosa nuttall's scrub oak
- Quercus durata san gabriel oak
- Quercus durata leather oak
- Quercus engelmannii engelmann oak
- Quercus garryana oregon oak
- Quercus ilex holly oak
- Quercus john-tuckeri tucker's oak
- Quercus kelloggii california black oak
- Quercus lobata valley oak roble
- Quercus pacifica island scrub oak
- Quercus palmeri palmer's oak
- Quercus parvula santa cruz island oak
- Quercus parvula shreve oak
- Quercus parvula tamalpais oak
- Quercus robur english oak pedunculate oak
- Quercus sadleriana deer oak
- Quercus tomentella island oak
- Quercus turbinella shrub live oak
- Quercus vacciniifolia huckleberry oak
- Quercus wislizeni interior live oak
- Rafinesquia californica california chicory
- Rafinesquia neomexicana desert chicory
- Raillardella argentea silky raillardella
- Raillardella pringlei showy raillardella
- Ranunculus hydrocharoides frog's-bit buttercup
- Ranunculus lobbii lobb's aquatic buttercup
- Ranunculus macounii macoun's buttercup
- Raphanus raphanistrum jointed charlock
- Raphanus sativus radish
- Reseda alba white mignonette
- Reseda lutea yellow mignonette
- Reseda luteola dyer's rocket
- Reseda odorata garden mignonette
- Rhamnus alaternus italian buckhorn
- Rhamnus alnifolia alder buckthorn
- Rhamnus crocea spiny redberry
- Rhamnus ilicifolia hollyleaf redberry
- Rhamnus pirifolia island redberry
- Rhodiola integrifolia western roseroot
- Rhododendron columbianum western labrador tea
- Rhododendron macrophyllum california rhododendron
- Rhododendron occidentale california azalea
- Rhus aromatica skunk bush
- Rhus integrifolia lemonade berry
- Rhus ovata sugar bush
- Rhynchospora alba white beaked-rush
- Rhynchospora californica california beaked-rush
- Rhynchospora capitellata brownish beaked-rush
- Ribes amarum bitter gooseberry
- Ribes aureum golden currant
- Ribes binominatum trailing gooseberry
- Ribes bracteosum stink currant
- Ribes californicum hillside gooseberry
- Ribes canthariforme moreno currant
- Ribes cereum wax currant
- Ribes divaricatum parish's gooseberry
- Ribes divaricatum straggle bush
- Ribes hudsonianum western black currant
- Ribes indecorum white-flowering currant
- Ribes inerme white-stemmed gooseberry
- Ribes lacustre swamp currant
- Ribes lasianthum woolly-flowered gooseberry
- Ribes laxiflorum trailing black currant
- Ribes lobbii gummy gooseberry
- Ribes malvaceum chaparral currant
- Ribes marshallii marshall's gooseberry
- Ribes menziesii aromatic canyon gooseberry
- Ribes menziesii canyon gooseberry
- Ribes montigenum western prickly gooseberry
- Ribes nevadense mountain pink currant
- Ribes quercetorum oakwoods gooseberry
- Ribes roezlii hoary gooseberry
- Ribes roezlii sierran gooseberry
- Ribes sanguineum red-flowering currant
- Ribes sericeum santa lucia gooseberry
- Ribes speciosum fuchsia-flowered gooseberry
- Ribes thacherianum santa cruz island gooseberry
- Ribes tularense sequoia gooseberry
- Ribes viburnifolium santa catalina island currant
- Ribes victoris victor's gooseberry
- Ribes viscosissimum sticky currant
- Robinia neomexicana new mexico locust
- Robinia pseudoacacia black locust
- Romanzoffia tracyi tracy's romanzoffia
- Romneya coulteri coulter's matilija poppy
- Romneya trichocalyx hairy matilija poppy
- Rorippa austriaca austrian field-cress
- Rorippa columbiae columbia yellow cress
- Rorippa subumbellata tahoe yellow cress
- Rosa bridgesii sierran dwarf rose
- Rosa californica california rose
- Rosa canina dog rose
- Rosa gymnocarpa gasquet rose
- Rosa gymnocarpa wood rose
- Rosa minutifolia small-leaved rose
- Rosa multiflora multiflora rosa
- Rosa nutkana nootka rose
- Rosa pinetorum pine rose
- Rosa pisocarpa ahart rose
- Rosa pisocarpa cluster or pea rose
- Rosa pisocarpa cluster rose
- Rosa rubiginosa sweet-brier
- Rosa spithamea coast ground rose
- Rosa woodsii mojave rose
- Rosa woodsii interior rose
- Rubus armeniacus himalayan blackberry
- Rubus glaucifolius waxleaf raspberry
- Rubus laciniatus cutleaf blackberry
- Rubus lasiococcus roughfruit raspberry
- Rubus leucodermis whitebark raspberry
- Rubus nivalis snow dwarf bramble
- Rubus parviflorus thimbleberry
- Rubus spectabilis salmonberry
- Rubus ulmifolius elmleaf blackberry
- Rubus ursinus california blackberry
- Rudbeckia californica california cone-flower
- Rudbeckia glaucescens waxy cone-flower
- Rudbeckia hirta black-eyed susan
- Rudbeckia klamathensis klamath cone-flower
- Rudbeckia occidentalis western cone-flower
- Rumex acetosella sheep sorrel
- Rumex crispus curly dock
- Rumex fueginus golden dock
- Rumex hymenosepalus canaigre wild-rhubarb
- Rumex obtusifolius bitter dock
- Rumex occidentalis western dock
- Rumex pulcher fiddle dock
- Rumex salicifolius willow dock
- Rumex venosus winged dock
- Rupertia hallii hall's rupertia
- Rupertia rigida parish's rupertia
- Rytidosperma penicillatum hairy oat grass poverty grass
- Saccharum ravennae ravenna grass
- Sagina apetala dwarf pearlwort
- Sagina decumbens western pearlwort
- Sagina maxima thick-stemmed pearlwort
- Sagina procumbens matted pearlwort
- Sagina saginoides arctic pearlwort
- Sagina subulata scottish moss
- Sagittaria rigida sessile-fruited arrowhead
- Sagittaria sanfordii sanford's arrowhead
- Salix alba white willow
- Salix babylonica weeping willow
- Salix bebbiana bebb's willow
- Salix boothii booth's willow
- Salix brachycarpa short-fruited willow
- Salix breweri brewer's willow
- Salix delnortensis del norte willow
- Salix drummondiana drummond's willow
- Salix eastwoodiae sierra willow
- Salix exigua narrow-leaved willow coyote willow
- Salix exigua hinds' willow
- Salix geyeriana geyer's willow
- Salix gooddingii goodding's black willow
- Salix hookeriana coastal willow
- Salix jepsonii jepson's willow
- Salix laevigata red willow
- Salix lasiandra tail-leaf willow
- Salix lasiandra pacific willow
- Salix lasiolepis arroyo willow
- Salix lemmonii lemmon's willow
- Salix ligulifolia strap-leafed willow
- Salix lutea yellow willow
- Salix melanopsis dusky willow
- Salix nivalis snow willow
- Salix orestera gray-leafed sierra willow
- Salix petrophila rocky mountain willow
- Salix planifolia tea-leafed willow
- Salix prolixa mackenzie's willow
- Salix purpurea basket willow
- Salix scouleriana scouler's willow
- Salix sitchensis sitka willow
- Salix tracyi tracy's willow
- Salsola paulsenii barbwire russian thistle
- Salsola tragus russian thistle tumbleweed
- Saltugilia caruifolia caraway-leaved woodland-gilia
- Saltugilia latimeri latimer's woodland-gilia
- Saltugilia splendens splendid woodland-gilia
- Salvia aethiopis mediterranean sage
- Salvia apiana white sage
- Salvia brandegeei brandegee's sage
- Salvia carduacea thistle sage
- Salvia columbariae chia
- Salvia dorrii fleshy sage
- Salvia eremostachya desert sage
- Salvia funerea death valley sage
- Salvia greatae orocopia sage
- Salvia leucophylla purple sage
- Salvia mellifera black sage
- Salvia munzii munz's sage
- Salvia spathacea california hummingbird sage
- Salvia virgata meadow sage
- Sambucus nigra blue elderberry
- Sambucus racemosa black elderberry
- Sambucus racemosa red elderberry
- Samolus parviflorus seaside brookweed
- Sanguisorba officinalis great burnet
- Sanicula arctopoides footsteps of spring yellow mats
- Sanicula bipinnata poison sanicle
- Sanicula bipinnatifida purple sanicle shoe buttons
- Sanicula hoffmannii hoffmann's sanicle
- Sanicula maritima adobe sanicle
- Sanicula peckiana peck's sanicle
- Sanicula saxatilis rock sanicle
- Sanicula tracyi tracy's sanicle
- Santolina chamaecyparissus lavender-cotton
- Sanvitalia abertii abert's sanvitalia
- Saussurea americana american saw-wort
- Saxifraga cespitosa tufted saxifrage
- Scandix pecten-veneris venus' needle
- Sceptridium multifidum leather grape-fern
- Scheuchzeria palustris scheuchzeria
- Schinus molle pepper tree
- Schinus polygamus chilean pepper tree
- Schinus terebinthifolius brazilian pepper tree
- Schoenoplectus acutus common tule
- Schoenoplectus americanus olney's three-square bulrush
- Schoenoplectus californicus southern bulrush
- Schoenoplectus heterochaetus slender bulrush
- Schoenoplectus mucronatus rough-seed bulrush rice-field bulrush
- Schoenoplectus pungens common three-square bulrush
- Schoenoplectus saximontanus rocky mountain bulrush
- Schoenoplectus subterminalis water bulrush
- Schoenoplectus tabernaemontani soft-stem bulrush
- Schoenoplectus triqueter three-sided bulrush
- Schoenus nigricans black bog-rush
- Scirpus pendulus pendulous bulrush
- Sclerocactus johnsonii johnson's bee-hive cactus
- Sclerocactus polyancistrus mojave fishhook cactus
- Sclerochloa dura hardgrass fairground grass
- Scleropogon brevifolius burro grass
- Scopulophila rixfordii rixford rockwort
- Scorzonera hispanica spanish salsify viper's grass
- Scrophularia atrata black-flowered figwort
- Scrophularia californica california figwort
- Scrophularia villosa santa catalina figwort
- Scutellaria bolanderi southern mountains skullcap
- Scutellaria galericulata marsh skullcap
- Scutellaria lateriflora side-flowering skullcap
- Scutellaria mexicana bladder-sage
- Searsia lancea african sumac
- Sedella leiocarpa lake county stonecrop
- Sedum albomarginatum feather river stonecrop
- Sedum album white stonecrop
- Sedum divergens cascade stonecrop
- Sedum lanceolatum spearleaf stonecrop
- Sedum laxum red mountain stonecrop
- Sedum laxum pale-yellow stonecrop
- Sedum laxum heckner's stonecrop
- Sedum laxum roseflower stonecrop
- Sedum niveum davidson's stonecrop
- Sedum oblanceolatum applegate stonecrop
- Sedum obtusatum canyon creek stonecrop
- Sedum obtusatum sierra stonecrop
- Sedum oreganum oregon stonecrop
- Sedum oregonense cream stonecrop
- Sedum praealtum green cockscomb
- Sedum radiatum coast range stonecrop
- Sedum spathulifolium broadleaf stonecrop
- Selaginella asprella bluish spike-moss
- Selaginella cinerascens ashy spike-moss
- Selaginella eremophila desert spike-moss
- Selaginella leucobryoides mojave spike-moss
- Selaginella scopulorum rocky mountain spike-moss
- Senecio aphanactis chaparral ragwort
- Senecio aronicoides rayless ragwort
- Senecio astephanus san gabriel ragwort
- Senecio blochmaniae blochman's ragwort
- Senecio californicus california ragwort
- Senecio clarkianus clark's ragwort
- Senecio elegans red-purple ragwort
- Senecio flaccidus douglas' threadleaf ragwort
- Senecio flaccidus smooth threadleaf ragwort
- Senecio flaccidus threadleaf ragwort
- Senecio fremontii dwarf mountain ragwort
- Senecio fremontii western dwarf mountain ragwort
- Senecio glomeratus cutleaf burnweed
- Senecio hydrophiloides sweet marsh ragwort
- Senecio hydrophilus water ragwort alkali-marsh ragwort
- Senecio integerrimus columbia ragwort
- Senecio integerrimus lambs-tongue ragwort
- Senecio integerrimus pale-yellow ragwort
- Senecio jacobaea tansy ragwort
- Senecio linearifolius linear-leaved australian fireweed
- Senecio lyonii island senecio
- Senecio minimus coastal burnweed
- Senecio mohavensis mojave ragwort
- Senecio pattersonensis mount patterson senecio
- Senecio quadridentatus cotton burnweed
- Senecio scorzonella sierra ragwort
- Senecio serra tall ragwort sawtooth groundsel
- Senecio spartioides broom-like ragwort
- Senecio sylvaticus woodland ragwort
- Senecio triangularis arrowleaf ragwort
- Senecio vulgaris common groundsel
- Senegalia greggii catclaw devil's claw
- Senna armata spiny senna
- Senna artemisioides silver senna
- Senna covesii coues' cassia
- Senna marilandica maryland senna
- Sesbania herbacea bigpod sesbania coffee weed colorado river hemp
- Sesbania punicea scarlet sesban
- Sesuvium verrucosum western sea-purslane
- Setaria adhaerens bur bristle grass
- Setaria faberi chinese foxtail
- Setaria parviflora knotroot bristle grass
- Setaria pumila yellow bristle grass
- Setaria sphacelata african bristle grass
- Setaria verticillata hooked bristle grass
- Setaria viridis green bristle grass
- Shepherdia argentea buffalo-berry
- Shepherdia canadensis canadian buffalo-berry
- Sherardia arvensis field madder
- Sibara deserti desert winged rockcress
- Sibara filifolia santa cruz island rockcress
- Sibaropsis hammittii hammitt's clay-cress
- Sida rhombifolia sida rhombus-leaved sida
- Sida spinosa prickly sida
- Sidalcea asprella harsh checkerbloom sierra foothills checkerbloom
- Sidalcea asprella dwarf sierran checkerbloom
- Sidalcea calycosa vernal pool checkerbloom hogwallow checkerbloom
- Sidalcea calycosa point reyes checkerbloom
- Sidalcea calycosa vernal pool checkerbloom
- Sidalcea celata redding checkerbloom
- Sidalcea covillei owens valley checkerbloom
- Sidalcea diploscypha fringed checkerbloom
- Sidalcea elegans del norte checkerbloom
- Sidalcea gigantea giant checkerbloom
- Sidalcea glaucescens waxy checkerbloom
- Sidalcea hartwegii hartweg's checkerbloom
- Sidalcea hickmanii cuesta pass checkerbloom
- Sidalcea hickmanii hickman's checkerbloom
- Sidalcea hickmanii napa checkerbloom
- Sidalcea hickmanii parish's checkerbloom
- Sidalcea hickmanii lake pillsbury checkerbloom
- Sidalcea hickmanii marin checkerbloom
- Sidalcea hirsuta hairy checkerbloom
- Sidalcea keckii keck's checkerbloom
- Sidalcea malachroides maple-leaved checkerbloom
- Sidalcea malviflora chaparral checkerbloom california checkerbloom
- Sidalcea malviflora bear valley checkerbloom
- Sidalcea malviflora geranium-leaved checkerbloom
- Sidalcea malviflora siskiyou checkerbloom
- Sidalcea malviflora purple-stemmed checkerbloom
- Sidalcea malviflora seacliff checkerbloom
- Sidalcea malviflora checkerbloom checkermallow
- Sidalcea multifida cut-leaf checkerbloom
- Sidalcea neomexicana salt spring checkerbloom
- Sidalcea oregana coast checkerbloom
- Sidalcea oregana marsh checkerbloom
- Sidalcea oregana oregon checkerbloom
- Sidalcea oregana kenwood marsh checkerbloom
- Sidalcea pedata bird-foot checkerbloom
- Sidalcea robusta butte county checkerbloom
- Sidalcea setosa bristly checkerbloom
- Sidalcea sparsifolia southern checkerbloom
- Sidalcea stipularis scadden flat checkerbloom
- Sidotheca caryophylloides chickweed oxytheca
- Sidotheca emarginata white-margined oxytheca
- Sidotheca trilobata three-lobed starry puncturebract
- Silene antirrhina sleepy catchfly
- Silene aperta naked catchfly tulare campion
- Silene armeria sweet-william catchfly
- Silene bernardina palmer's catchfly
- Silene bolanderi bolander's catchfly
- Silene bridgesii bridges' catchfly
- Silene campanulata red mountain catchfly
- Silene campanulata bell catchfly
- Silene coniflora multinerved catchfly
- Silene conoidea large sand catchfly
- Silene dichotoma forked catchfly
- Silene douglasii douglas' catchfly
- Silene gallica small-flower catchfly windmill pink
- Silene grayi gray's catchfly
- Silene hookeri hooker's catchfly
- Silene invisa short-petaled campion
- Silene laciniata california pink
- Silene laciniata mexican pink
- Silene latifolia white campion
- Silene lemmonii lemmon's catchfly
- Silene marmorensis marble mountain campion
- Silene menziesii menzies' catchfly
- Silene noctiflora night-flowering catchfly
- Silene nuda sticky catchfly
- Silene occidentalis western campion
- Silene oregana oregon campion
- Silene parishii parish's catchfly
- Silene pendula drooping catchfly
- Silene salmonacea klamath mountain catchfly salmon-flowered catchfly
- Silene sargentii sargent's catchfly
- Silene scouleri scouler's catchfly
- Silene serpentinicola serpentine catchfly
- Silene suksdorfii cascade alpine campion suksdorf's catchfly
- Silene verecunda san francisco campion
- Silene vulgaris bladder campion
- Sinapis alba white mustard
- Sinapis arvensis charlock
- Sisymbrium altissimum tumble mustard
- Sisymbrium irio london rocket
- Sisymbrium officinale hedge mustard
- Sisyrinchium bellum western blue-eyed-grass
- Sisyrinchium californicum golden-eyed-grass
- Sisyrinchium elmeri elmer's blue-eyed-grass
- Sisyrinchium funereum death valley blue-eyed-grass
- Sisyrinchium halophilum nevada blue-eyed-grass
- Sisyrinchium hitchcockii hitchcock's blue-eyed-grass
- Sisyrinchium idahoense idaho blue-eyed-grass
- Sisyrinchium longipes timberland blue-eyed-grass
- Smilax jamesii english peak greenbrier
- Solanum carolinense carolina horse-nettle
- Solanum dimidiatum torrey's nightshade
- Solanum elaeagnifolium white horse-nettle
- Solanum lanceolatum lanceleaf nightshade
- Solanum marginatum white-margined nightshade
- Solanum nigrum black nightshade
- Solanum rostratum buffalo berry
- Solanum wallacei wallace's nightshade
- Solidago altissima late goldenrod
- Solidago confinis southern goldenrod
- Solidago elongata west coast canada goldenrod
- Solidago guiradonis guirado's goldenrod
- Solidago lepida western goldenrod
- Solidago multiradiata northern goldenrod
- Solidago spathulata coast goldenrod
- Solidago spectabilis showy goldenrod
- Solidago velutina california goldenrod
- Solidago velutina velvety goldenrod
- Sonchus arvensis perennial sow thistle
- Sonchus asper prickly sow thistle
- Sonchus oleraceus common sow thistle
- Sorbus aucuparia european mountain ash
- Sorbus californica california mountain ash
- Sorbus scopulina rocky mountain or cascade mountain ash
- Sorbus sitchensis dwarf or gray's mountain ash
- Sorbus sitchensis sitka mountain ash
- Sorghum bicolor sorghum
- Sorghum halepense johnson grass
- Sparaxis grandiflora butter cup
- Sparaxis tricolor harlequin flower
- Sparganium angustifolium narrow-leaved bur-reed
- Sparganium natans small bur-reed
- Spartina alterniflora salt-water cord grass
- Spartina densiflora dense-flowered cord grass
- Spartina foliosa california cord grass
- Spartina gracilis alkali cord grass
- Spartina patens salt-meadow cord grass
- Spartium junceum spanish broom
- Spergula arvensis stickwort starwort
- Spergularia atrosperma black seed sand-spurrey
- Spergularia bocconi boccone's sand-spurrey
- Spergularia canadensis western sand-spurrey
- Spergularia macrotheca sticky sand-spurrey
- Spergularia marina saltmarsh sand-spurrey
- Spergularia media greater sea-spurrey
- Spergularia platensis la plata sand-spurrey
- Spergularia rubra red sand-spurrey
- Spergularia villosa hairy sand-spurrey
- Spermolepis echinata bristly scaleseed
- Sphaeralcea ambigua apricot mallow
- Sphaeralcea ambigua parish mallow
- Sphaeralcea ambigua roughleaf apricot mallow
- Sphaeralcea angustifolia narrow-leaved globemallow
- Sphaeralcea coulteri coulter's globemallow
- Sphaeralcea emoryi emory's globemallow
- Sphaeralcea grossulariifolia gooseberry-leaved globemallow
- Sphaeralcea munroana munro's desert-mallow
- Sphaeralcea orcuttii carrizo mallow
- Sphaeralcea rusbyi rusby's desert-mallow
- Sphaeromeria cana gray chickensage
- Sphaeromeria potentilloides alkali tansy-sage
- Sphaeromeria potentilloides fivefinger chickensage
- Sphaerophysa salsula austrian peaweed
- Sphaeropteris cooperi cooper's tree fern
- Sphenopholis obtusata prairie wedge grass
- Sphenosciadium capitellatum swamp white heads ranger's buttons
- Sporobolus airoides alkali sacaton
- Sporobolus contractus spike dropseed
- Sporobolus cryptandrus sand dropseed
- Sporobolus flexuosus mesa dropseed
- Sporobolus indicus smut grass
- Sporobolus vaginiflorus poverty dropseed
- Sporobolus wrightii big sacaton
- Stachys pilosa prairie woundwort
- Stachys pycnantha short-spiked hedge nettle
- Stanleya viridiflora green-flowered prince's plume
- Staphylea bolanderi sierra bladdernut
- Stebbinsoseris decipiens santa cruz microseris
- Stebbinsoseris heterocarpa grassland silverpuffs
- Stellaria borealis sitka starwort
- Stellaria calycantha northern starwort
- Stellaria crispa crisp starwort
- Stellaria graminea common starwort
- Stellaria littoralis beach starwort
- Stellaria longifolia long-leaved starwort
- Stellaria longipes goldie's starwort
- Stellaria media common chickweed
- Stellaria neglecta greater chickweed
- Stellaria nitens shining chickweed
- Stellaria obtusa obtuse starwort rocky mountain starwort
- Stellaria pallida lesser chickweed
- Stellaria umbellata umbellate starwort
- Stemodia durantifolia purple stemodia
- Stenotaphrum secundatum saint augustine grass
- Stenotus acaulis stemless goldenweed
- Stenotus lanuginosus woolly stenotus
- Stephanomeria cichoriacea silver rock-lettuce chicoryleaf wire-lettuce
- Stephanomeria pauciflora wire-lettuce
- Stephanomeria tenuifolia narrow-leaved wire-lettuce
- Stipa arida mormon needle grass
- Stipa brachychaeta puna needle grass
- Stipa capensis cape rice grass
- Stipa cernua nodding needle grass
- Stipa chaetophora stipoid rice grass
- Stipa comata needle-and-thread
- Stipa coronata crested needle grass
- Stipa diegoensis san diego needle grass
- Stipa divaricata small-flowered rice grass
- Stipa exigua little rice grass
- Stipa hymenoides sand rice grass
- Stipa kingii king's rice grass
- Stipa latiglumis wide-glumed needle grass
- Stipa lemmonii lemmon's needle grass
- Stipa lepida foothill needle grass
- Stipa lettermanii letterman's needle grass
- Stipa manicata andean tussock grass
- Stipa mauritanica mauritanian grass
- Stipa miliacea smilo grass
- Stipa nelsonii mountain needle grass
- Stipa nevadensis nevada needle grass
- Stipa occidentalis california needle grass
- Stipa occidentalis western needle grass
- Stipa occidentalis common western needle grass
- Stipa pinetorum pinewoods needle grass
- Stipa pulchra purple needle grass
- Stipa purpurata bristly needle grass
- Stipa speciosa desert needle grass
- Stipa stillmanii stillman's needle grass
- Stipa thurberiana thurber's needle grass
- Stipa webberi webber's needle grass
- Streptanthus barbiger bearded jewelflower
- Streptanthus batrachopus tamalpais jewelflower
- Streptanthus bernardinus laguna mountains jewelflower
- Streptanthus callistus mount hamilton jewelflower
- Streptanthus campestris southern jewelflower
- Streptanthus cordatus piute mountains jewelflower
- Streptanthus diversifolius varied-leaved jewelflower
- Streptanthus drepanoides sickle-fruit jewelflower
- Streptanthus farnsworthianus farnsworth's jewelflower
- Streptanthus fenestratus tehipite valley jewelflower
- Streptanthus glandulosus metcalf canyon jewelflower
- Streptanthus glandulosus hoffman's bristly jewelflower
- Streptanthus glandulosus tiburon jewelflower
- Streptanthus glandulosus mount tamalpais bristly jewelflower
- Streptanthus glandulosus uncommon jewelflower
- Streptanthus gracilis alpine jewelflower
- Streptanthus hispidus mount diablo jewelflower
- Streptanthus howellii howell's jewelflower
- Streptanthus insignis arburua ranch jewelflower
- Streptanthus insignis san benito jewelflower
- Streptanthus longisiliquus long-fruit jewelflower
- Streptanthus oblanceolatus trinity river jewelflower
- Streptanthus oliganthus masonic mountain jewelflower
- Streptanthus polygaloides milkwort jewelflower
- Streptanthus tortuosus mountain jewelflower
- Streptanthus vernalis early jewelflower
- Stuckenia filiformis slender-leaved pondweed
- Stuckenia pectinata fennel-leaf pondweed
- Stuckenia striata nevada pondweed
- Stutzia covillei coville's orach
- Stylocline citroleum oil neststraw
- Stylocline gnaphaloides everlasting neststraw
- Stylocline intertexta mojave neststraw
- Stylocline masonii mason's neststraw
- Stylocline micropoides desert neststraw woollyhead fanbract
- Stylocline psilocarphoides peck neststraw
- Stylocline sonorensis mesquite neststraw
- Suaeda calceoliformis horned seablite
- Suaeda californica california seablite
- Suaeda esteroa estuary seablite
- Suaeda nigra bush seepweed
- Suaeda occidentalis western seablite
- Suaeda taxifolia woolly seablite
- Subularia aquatica water awlwort
- Swallenia alexandrae eureka valley dune grass
- Swertia perennis star swertia
- Syagrus romanzoffiana queen palm
- Symphoricarpos albus snowberry
- Symphoricarpos longiflorus fragrant snowberry
- Symphoricarpos mollis creeping snowberry trip vine
- Symphyotrichum defoliatum san bernardino aster
- Symphyotrichum greatae greata's aster
- Symphyotrichum hendersonii henderson's aster
- Symphyotrichum lentum suisun marsh aster
- Symphyotrichum spathulatum western bog aster
- Symphyotrichum subspicatum douglas aster
- Symphyotrichum subulatum annual saltmarsh aster
- Symphytum ×uplandicum russian comfrey
- Symphytum officinale comfrey
- Synthyris cordata serpentine snow queen
- Synthyris missurica kittentail
- Synthyris reniformis snow queen
- Syntrichopappus lemmonii lemmon's syntrichopappus
- Systenotheca vortriedei vortriede's spineflower
- Syzygium australe scrub cherry
- Tagetes erecta african or french marigold
- Tagetes minuta wild marigold
- Tamarix aphylla athel
- Tamarix chinensis fivestamen tamarisk
- Tamarix gallica french tamarisk
- Tamarix parviflora smallflower tamarisk
- Tamarix ramosissima saltcedar
- Tanacetum bipinnatum dune tansy
- Tanacetum parthenium feverfew
- Tanacetum vulgare common tansy
- Taraxacum californicum california dandelion
- Taraxacum ceratophorum horned dandelion
- Taraxacum erythrospermum red-seeded dandelion
- Taraxacum officinale common dandelion
- Tauschia glauca glaucous tauschia
- Tauschia howellii howell's tauschia
- Taxus brevifolia pacific yew
- Tetracoccus dioicus parry's tetracoccus
- Tetracoccus hallii hall's tetracoccus
- Tetracoccus ilicifolius holly-leaved tetracoccus
- Tetradymia argyraea striped horsebrush
- Tetradymia tetrameres dune horsebrush
- Tetragonia tetragonoides new zealand spinach
- Tetrapteron graciliflorum hill sun cup
- Teucrium cubense dwarf germander
- Teucrium glandulosum desert germander
- Thalictrum alpinum arctic meadow-rue
- Thelesperma megapotamicum rayless greenthread
- Thelypodium brachycarpum short-podded thelypodium
- Thelypodium howellii howell's thelypodium
- Thelypodium integrifolium foxtail thelypodium
- Thelypodium milleflorum many-flowered thelypodium
- Thelypodium stenopetalum slender-petaled thelypodium
- Thelypteris nevadensis nevada marsh fern
- Thelypteris puberula sonoran maiden fern
- Thermopsis californica silvery false-lupine
- Thermopsis californica velvety false-lupine
- Thermopsis macrophylla santa ynez false-lupine
- Thermopsis robusta robust false-lupine
- Thuja plicata western red cedar canoe cedar
- Thysanocarpus conchuliferus santa cruz island fringepod
- Tiarella trifoliata lace flower
- Tidestromia lanuginosa woolly tidestromia
- Tidestromia suffruticosa honeysweet
- Tiquilia canescens shrubby tiquilia
- Tiquilia nuttallii annual tiquilia
- Tiquilia palmeri palmer's tiquilia
- Tiquilia plicata fan-leaved tiquilia
- Tonestus eximius tahoe tonestus
- Tonestus lyallii lyall's tonestus
- Tonestus peirsonii peirson's tonestus
- Torilis arvensis tall sock-destroyer
- Torilis nodosa short sock-destroyer
- Torreya californica california-nutmeg
- Torreyochloa pallida weak manna grass
- Townsendia condensata cushion townsendia
- Townsendia leptotes slender townsendia
- Toxicodendron diversilobum western poison oak
- Tracyina rostrata beaked tracyina
- Tragia ramosa desert tragia
- Tragopogon dubius yellow salsify
- Tragopogon porrifolius salsify oyster plant
- Tragopogon pratensis meadow salsify
- Transberingia bursifolia virgate halimolobos
- Triadica sebifera chinese tallowtree
- Tricardia watsonii three hearts
- Trichocoronis wrightii wright's trichocoronis
- Trichophorum pumilum little bulrush
- Trichostema austromontanum hidden lake bluecurls
- Trichostema lanatum woolly blue curls
- Trichostema lanceolatum vinegar weed
- Trichostema laxum turpentine weed
- Trichostema micranthum small-flowered bluecurls
- Trichostema ovatum san joaquin bluecurls
- Trichostema rubisepalum hernandez bluecurls
- Trichostema ruygtii napa bluecurls
- Tridens muticus slim tridens
- Trifolium alexandrinum egyptian clover
- Trifolium amoenum two-fork clover
- Trifolium andersonii anderson's clover
- Trifolium andersonii beatley's five-leaved clover
- Trifolium angustifolium narrow-leaved clover
- Trifolium arvense rabbitfoot clover
- Trifolium aureum large hop clover
- Trifolium barbigerum bearded clover
- Trifolium beckwithii beckwith's clover
- Trifolium bifidum pinole clover
- Trifolium bolanderi bolander's clover
- Trifolium breweri brewer's clover
- Trifolium buckwestiorum santa cruz clover
- Trifolium campestre hop clover
- Trifolium cernuum nodding clover
- Trifolium ciliolatum foothill clover
- Trifolium cyathiferum bowl clover
- Trifolium depauperatum pale sack clover
- Trifolium depauperatum dwarf sack clover
- Trifolium depauperatum truncate sack clover
- Trifolium dubium little hop clover
- Trifolium eriocephalum hairy head clover
- Trifolium fragiferum strawberry clover
- Trifolium fucatum bull clover
- Trifolium glomeratum clustered clover
- Trifolium gracilentum pinpoint clover
- Trifolium grayi gray's clover
- Trifolium gymnocarpon plummer's clover
- Trifolium hirtum rose clover
- Trifolium howellii howell's clover
- Trifolium hybridum alsike clover
- Trifolium hydrophilum saline clover
- Trifolium incarnatum crimson clover
- Trifolium jokerstii butte county golden clover
- Trifolium kingii dedecker's clover
- Trifolium lemmonii lemmon's clover
- Trifolium longipes elmer's clover
- Trifolium longipes long-stalked clover
- Trifolium macraei macrae's clover
- Trifolium macrocephalum large-head clover
- Trifolium microcephalum small-head clover
- Trifolium microdon thimble clover
- Trifolium monanthum grant's carpet clover
- Trifolium monanthum carpet clover
- Trifolium monanthum small carpet clover
- Trifolium monanthum delicate carpet clover
- Trifolium obtusiflorum clammy clover
- Trifolium oliganthum few-flowered clover
- Trifolium olivaceum olive clover
- Trifolium palmeri southern island clover
- Trifolium polyodon pacific grove clover
- Trifolium pratense red clover
- Trifolium productum productive clover
- Trifolium repens white clover
- Trifolium resupinatum reversed clover
- Trifolium retusum teasel clover
- Trifolium siskiyouense siskiyou clover
- Trifolium striatum knotted clover
- Trifolium subterraneum subterranean clover
- Trifolium tomentosum woolly clover
- Trifolium trichocalyx monterey clover
- Trifolium variegatum small-flowered variegated clover
- Trifolium variegatum large variegated clover
- Trifolium variegatum variegated clover
- Trifolium vesiculosum arrowleaf clover
- Trifolium willdenovii tomcat clover
- Trifolium wormskioldii cow clover
- Triglochin concinna seaside arrow-grass
- Triglochin maritima common arrow-grass
- Triglochin palustris marsh arrow-grass
- Triglochin scilloides flowering-quillwort
- Triglochin striata three-ribbed arrow-grass
- Trillium chloropetalum giant trillium
- Trillium ovatum salmon mountains wakerobin
- Trillium ovatum white or western trillium
- Triphysaria eriantha butter-and-eggs johnny-tuck
- Triphysaria floribunda san francisco owl's-clover
- Tripleurospermum inodorum scentless mayweed false chamomile
- Tripterocalyx crux-maltae kellogg's sand-verbena
- Tripterocalyx micranthus small-flowered sand-verbena
- Trisetum canescens tall false oat
- Trisetum cernuum nodding false oat
- Trisetum projectum interrupted false oat
- Trisetum spicatum spike false oat
- Trisetum wolfii wolf's false oat
- Triteleia clementina san clemente island triteleia
- Triteleia grandiflora large-flowered triteleia
- Triteleia hyacinthina white brodiaea fool's onion
- Triteleia ixioides pretty face
- Triteleia ixioides cook's triteleia
- Triteleia ixioides golden brodiaea
- Triteleia laxa ithuriel's spear common triteleia
- Triteleia lugens dark-mouthed triteleia
- Triteleia montana mountain triteleia
- Triteleia peduncularis long-rayed brodiaea
- Tropaeolum majus garden nasturtium
- Tropidocarpum californicum kings gold
- Tropidocarpum capparideum caper-fruited tropidocarpum
- Tsuga heterophylla western hemlock
- Tsuga mertensiana mountain hemlock
- Tuctoria greenei greene's tuctoria
- Tuctoria mucronata crampton's tuctoria solano grass
- Tulipa clusiana tulip
- Typha angustifolia narrow-leaved cattail
- Typha domingensis southern cattail
- Typha latifolia broad-leaved cattail
- Ulmus americana american elm
- Ulmus minor english elm
- Ulmus parvifolia chinese elm lacebark elm
- Ulmus pumila siberian elm
- Urtica dioica american stinging nettle
- Urtica dioica hoary nettle
- Urtica urens dwarf nettle
- Utricularia intermedia flat-leaved bladderwort
- Utricularia macrorhiza common bladderwort
- Utricularia minor lesser bladderwort
- Utricularia ochroleuca cream-flowered bladderwort
- Vaccinium cespitosum dwarf bilberry
- Vaccinium deliciosum cascade bilberry
- Vaccinium macrocarpon cranberry
- Vaccinium membranaceum thinleaf huckleberry
- Vaccinium ovatum california huckleberry
- Vaccinium parvifolium red huckleberry
- Vaccinium scoparium little-leaved huckleberry
- Vaccinium uliginosum western blueberry
- Vachellia farnesiana sweet acacia
- Valeriana occidentalis western valerian
- Vancouveria chrysantha siskiyou inside-out-flower
- Vancouveria planipetala redwood ivy
- Ventenata dubia north africa grass
- Veratrum fimbriatum fringed false-hellebore
- Veratrum insolitum siskiyou false-hellebore
- Verbascum blattaria moth mullein
- Verbascum bombyciferum giant silver mullein
- Verbascum speciosum showy mullein
- Verbascum thapsus woolly mullein
- Verbascum virgatum wand mullein
- Verbena californica red hills vervain
- Verbesina dissita big-leaved crownbeard
- Verbesina encelioides golden crownbeard
- Veronica americana american brooklime
- Veronica anagallis-aquatica water speedwell
- Veronica catenata chain speedwell
- Veronica copelandii copeland's speedwell
- Veronica cusickii cusick's speedwell
- Veronica peregrina purslane speedwell
- Veronica persica persian speedwell
- Veronica scutellata marsh speedwell
- Veronica wormskjoldii american alpine speedwell
- Viburnum ellipticum oval-leaved viburnum
- Viburnum opulus cranberrybush
- Vicia americana american vetch
- Vicia benghalensis purple vetch
- Vicia bithynica bithynian vetch
- Vicia cracca bird vetch
- Vicia disperma two-seeded vetch
- Vicia faba fava bean broad bean horse bean
- Vicia gigantea giant vetch
- Vicia hassei slender vetch
- Vicia ludoviciana deerpea vetch
- Vicia lutea yellow vetch
- Vicia pannonica hungarian vetch
- Vicia sativa narrow-leaved vetch
- Vicia sativa spring vetch
- Vicia tetrasperma sparrow vetch
- Vicia villosa hairy vetch winter vetch
- Viguiera purisimae la purisima viguiera
- Vinca major greater periwinkle
- Viola adunca western dog violet early blue violet
- Viola arvensis field pansy european field-pansy wild pansy
- Viola bakeri baker's violet
- Viola beckwithii beckwith's violet great basin violet
- Viola cuneata northern two-eyed violet wedge-leaved violet
- Viola douglasii douglas' violet golden violet
- Viola glabella stream violet smooth yellow violet
- Viola hallii hall's violet wild pansy
- Viola howellii howell's violet
- Viola langsdorffii alaska violet langsdorff's violet
- Viola lobata pine violet yellow wood violet
- Viola macloskeyi macloskey's violet small white violet smooth white violet
- Viola nephrophylla leconte violet
- Viola ocellata western heart's ease two-eyed violet
- Viola odorata english violet sweet violet
- Viola palustris alpine marsh violet
- Viola pedunculata johnny-jump-up
- Viola pinetorum gray-leaved violet
- Viola pinetorum mountain yellow violet
- Viola praemorsa astoria violet yellow montane violet
- Viola primulifolia western white bog violet
- Viola purpurea golden violet
- Viola purpurea mountain violet
- Viola purpurea purple-marked yellow violet
- Viola sempervirens evergreen violet redwood violet
- Viola sheltonii shelton's violet
- Viola tomentosa felt-leaved violet
- Viscum album european mistletoe
- Vitis californica california wild grape
- Vitis girdiana desert wild grape
- Vitis rupestris rock grape
- Vitis vinifera wine grape
- Volutaria canariensis canary islands knapweed
- Volutaria muricata morocco knapweed
- Washingtonia filifera california fan palm
- Washingtonia robusta mexican fan palm
- Wigandia urens stinging wigandia
- Wislizenia refracta palmer's jackass-clover
- Wislizenia refracta jackass-clover
- Wolffia brasiliensis brazilian watermeal
- Woodwardia fimbriata giant chain fern
- Wyethia bolanderi bolander's mule's ears
- Wyethia elata hall's wyethia
- Wyethia invenusta rayless mule's ears
- Wyethia longicaulis humboldt county wyethia
- Wyethia ovata southern mule's ears
- Wyethia reticulata el dorado county mule ears
- Xanthisma gracile annual bristleweed
- Xanthisma junceum rush-like bristleweed
- Xanthisma spinulosum spiny goldenweed
- Xanthium spinosum spiny cocklebur
- Xanthium strumarium cocklebur
- Xylorhiza cognata mecca-aster
- Xylorhiza orcuttii orcutt's woody-aster
- Xylorhiza tortifolia mojave-aster
- Yucca baccata banana yucca blue yucca
- Yucca brevifolia joshua tree
- Yucca schidigera mojave yucca
- Zantedeschia aethiopica calla-lily
- Zeltnera arizonica arizona centaury
- Zeltnera davyi davy's centaury
- Zeltnera exaltata tall centaury desert centaury
- Zeltnera muehlenbergii monterey centaury
- Zeltnera namophila spring-loving centaury
- Zeltnera trichantha alkali centaury
- Zeltnera venusta california centaury charming centaury
- Zizania palustris interior wild rice northern wild rice
- Ziziphus obtusifolia graythorn
- Ziziphus parryi parry's jujube
- Ziziphus zizyphus jujube