Streptanthus

Streptanthus
	Streptanthus cordatus, southern Nevada
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Brassicales
Family:	Brassicaceae
Genus:	Streptanthus; Nutt. (1825)
Species
	58, see text
Synonyms
	Agianthus Greene (1906); Cartiera Greene (1906); Caulanthus S.Watson (1871); Disaccanthus Greene (1906); Euklisia Rydb. ex Small (1903); Guillenia Greene (1906); Icianthus Greene (1906); Mesoreanthus Greene (1904); Microsemia Greene (1904); Microsisymbrium O.E.Schulz (1924), nom. superfl.; Mitophyllum Greene (1904); Pleiocardia Greene (1904); Sibaropsis S.Boyd & T.S.Ross (1997); Stanfordia S.Watson (1880); Streptanthella Rydb. (1917);

Streptanthus is a genus of plants within the family Brassicaceae.^[2] There are 58 known species within the genus Streptanthus, distributed through the western and south-central United States and northern Mexico.^[1] The common names for this genus are twistflower^[3] and jewelflower. Twenty-four of the species and eleven lesser taxa occur in California, thirty-two of which are California endemics; seventeen of these California taxa are classified as rare plants.

Species and subspecies

58 species are accepted.^[1] The following are some of the species (or subspecies) of the genus Streptanthus (county locations are not intended to be exhaustive):

Streptanthus amplexicaulis (S.Watson) Jeps.
Streptanthus anceps (Payson) Hoover
Streptanthus anomalus D.L.Smith, A.Arthur & R.E.Preston
Streptanthus barbatus S.Watson – Pacific jewelflower
Streptanthus barbiger Greene – Bearded jewelflower
Streptanthus barnebyi (Rollins & P.K.Holmgren) Al-Shehbaz
Streptanthus batrachopus J.L.Morrison – Mt. Tamalpais jewelflower
Streptanthus bernardinus (Greene) Parish – Laguna Mountain jewelflower
Streptanthus brachiatus F.W.Hoffm. – Socrates Mine jewelflower
Streptanthus bracteatus A.Gray – Bracted twistflower
Streptanthus breweri A.Gray – Brewer's jewelflower
Streptanthus californicus (S.Watson) Greene
Streptanthus callistus J.L.Morrison – Mt. Hamilton jewelflower
Streptanthus campestris S.Watson – Southern jewelflower
Streptanthus carinatus C.Wright ex A.Gray – Lyreleaf jewelflower
Streptanthus cooperi (S.Watson) Al-Shehbaz
Streptanthus cordatus Nutt. – Heartleaf twistflower
Streptanthus coulteri (S.Watson) Greene
Streptanthus crassicaulis Torr.
Streptanthus cutleri Cory – Cutler's jewelflower
Streptanthus diversifolius S.Watson – Variableleaf jewelflower
Streptanthus drepanoides Kruckeb. & J.L.Morrison – Sicklefruit jewelflower
Streptanthus farnsworthianus J.T.Howell – Farnsworth's jewelflower
Streptanthus fenestratus (Greene) J.T.Howell – Tehipite Valley jewelflower (Fresno County, California)
Streptanthus flavescens Hook.
Streptanthus glandulosus Hook. – Bristly jewelflower, common jewelflower (Mendocino County to San Luis Obispo County, California)^[4]
- Streptanthus glandulosus subsp. albidus (Greene) Al-Shehbaz, M.S.Mayer & D.W.Taylor – Metcalf Canyon jewelflower (Santa Clara County, California), endangered^[5]
- Streptanthus glandulosus subsp. arkii M.S.Mayer
- Streptanthus glandulosus subsp. glandulosus
- Streptanthus glandulosus var. hoffmanii Kruckeb.
- Streptanthus glandulosus subsp. josephinensis Al-Shehbaz & M.S.Mayer
- Streptanthus glandulosus subsp. niger (Greene) Al-Shehbaz, M.S.Mayer & D.W.Taylor – Tiburon jewelflower (Marin County, California), endangered
- Streptanthus glandulosus subsp. pulchellus (Greene) Kruckeb.
- Streptanthus glandulosus subsp. raichei M.S.Mayer
- Streptanthus glandulosus subsp. secundus (Greene) Kruckeb.
- Streptanthus glandulosus subsp. sonomensis (Kruckeb.) M.S.Mayer & D.W.Taylor
Streptanthus glaucus (S.Watson) Jeps.
Streptanthus gracilis Eastw. – Alpine jewelflower
Streptanthus hallii (Payson) Jeps.
Streptanthus hammittii (S.Boyd & T.S.Ross) Al-Shehbaz, Hammitt's clay-cress (Riverside and San Diego counties, California)
Streptanthus hesperidis Jeps.
Streptanthus heterophyllus Nutt.
Streptanthus hispidus A.Gray – Mt. Diablo jewelflower (Contra Costa County, California)
Streptanthus howellii S.Watson – Howell's jewelflower
Streptanthus hyacinthoides Hook. – Sandhill twistflower (Texas, Arkansas, Louisiana, Oklahoma, Nebraska)
Streptanthus inflatus (S.Watson) Greene
Streptanthus insignis Jeps. – Plumed jewelflower
Streptanthus juneae N.Jensen (San Bernardino Mountains, San Bernardino County, California)^[6]
Streptanthus lasiophyllus (Hook. & Arn.) Hoover
Streptanthus lemmonii S.Watson
Streptanthus longirostris (S.Watson) S.Watson – longbeak streptanthella, streptanthella (western US and northwestern Mexico)
Streptanthus longisiliquus G.Clifton & R.E.Buck – Longfruit jewelflower
Streptanthus maculatus Nutt. – Clasping jewelflower, type species, (Arkansas, Oklahoma, Texas)
Streptanthus major (M.E.Jones) Jeps.
Streptanthus medeirosii N.Jensen (Tehachapi Mountains, Kern County, California)^[6]
Streptanthus morrisonii F.W.Hoffm. – Morrison's jewelflower
Streptanthus oblanceolatus T.W.Nelson & J.P.Nelson
Streptanthus oliganthus Rollins – Masonic Mountain jewelflower
Streptanthus petiolaris A.Gray
Streptanthus pilosus (S.Watson) Jeps.
Streptanthus platycarpus A.Gray
Streptanthus polygaloides A.Gray – Milkwort jewelflower
Streptanthus purpureus Sánchez Mata, Fuente, Rufo, Nuria Rodr. & Amils
Streptanthus simulans (Payson) Jeps.
Streptanthus squamiformis Goodman
Streptanthus tortuosus Kellogg – Mountain jewelflower, shieldplant
Streptanthus vernalis R.O'Donnell & R.W.Dolan – Early jewelflower
Streptanthus vimineus (Greene) Al-Shehbaz & D.W.Taylor

References

^ ^a ^b ^c ^d Streptanthus Nutt. Plants of the World Online. Retrieved 12 December 2023.
^ Kruckeberg & Morrison 1983 Madroño 30:230–244
^ NRCS. "Streptanthus". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 4 December 2015.
^ David Rogers, The Double Cone Register, Vol IX, no. 1, Spring, 2006
^ Andy Kratter, Summary of Rare Plant Search along the Western California University Access Road Alignment, Los Gatos, County of Santa Clara, California, prepared for City of Los Gatos and State of California Environmental Clearinghouse, Earth Metrics Inc. Report 7965.W0, May, 1989
^ ^a ^b Nick Jensen "Two New Species of Streptanthus (Brassicaceae) in Southern California, and Notes on their Conservation," Madroño, 67(1), 19-34, (23 April 2020) https://doi.org/10.3120/0024-9637-67.1.19

External links

Jepson Manual Treatment

This Brassicales article is a stub. You can help Wikipedia by expanding it.

[powo-1] Streptanthus Nutt. Plants of the World Online. Retrieved 12 December 2023.

[2] Kruckeberg & Morrison 1983 Madroño 30:230–244

[3] NRCS. "Streptanthus". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 4 December 2015.

[4] David Rogers, The Double Cone Register, Vol IX, no. 1, Spring, 2006

[5] Andy Kratter, Summary of Rare Plant Search along the Western California University Access Road Alignment, Los Gatos, County of Santa Clara, California, prepared for City of Los Gatos and State of California Environmental Clearinghouse, Earth Metrics Inc. Report 7965.W0, May, 1989

[Jensen-6] Nick Jensen "Two New Species of Streptanthus (Brassicaceae) in Southern California, and Notes on their Conservation," Madroño, 67(1), 19-34, (23 April 2020) https://doi.org/10.3120/0024-9637-67.1.19

[1]

[2]

[3]

[4]

[5]

[6]