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Phytolacca americana

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Phytolacca americana

Secure  (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Phytolaccaceae
Genus: Phytolacca
Species:
P. americana
Binomial name
Phytolacca americana
Synonyms[2][3]
  • Phytolacca decandra (L.Tooltip Carl Linnaeus)
  • Phytolacca rigida (Small)

Phytolacca americana, also known as American pokeweed, pokeweed, poke sallet, pokeberry, dragonberries, pigeonberry weed, and inkberry, is a poisonous, herbaceous perennial plant in the pokeweed family Phytolaccaceae. This pokeweed grows 1 to 3 metres (4 to 10 ft).[4] It has simple leaves on green to red or purplish stems and a large white taproot. The flowers are green to white, followed by berries which ripen through red to purple to almost black which are a food source for songbirds such as gray catbird, northern mockingbird, northern cardinal, and brown thrasher, as well as other birds and some small non-avian animals (i.e., for species that are unaffected by its mammalian toxins).

American pokeweed (lat. Phytolacca americana)

Pokeweed is native to eastern North America, the Midwest, and the South, with more scattered populations in the far West where it was introduced.[5] It is also naturalized in parts of Europe and Asia. It is considered a pest species by farmers.[6] Pokeweed is poisonous to humans, dogs, and livestock. In spring and early summer, shoots and leaves (not the root) are edible with proper cooking (hence the common name "poke sallet"),[7] but later in the summer they become deadly, and the berries are also poisonous. It is used as an ornamental in horticulture, and it provokes interest for the variety of its natural products (toxins and other classes), for its ecological role, its historical role in traditional medicine, and for some utility in biomedical research (e.g., in studies of pokeweed mitogen). In the wild, it is easily found growing in pastures, recently cleared areas, and woodland openings, edge habitats such as along fencerows, and in wastelands.

The first word in its scientific name, Phytolacca americana, comes from the Greek words phyton ('plant') and lacca—the scarlet dye secreted by the Kerria lacca scale insect. The second denotes this plant as native to America. The common name "poke" is derived from puccoon, pocan, or poughkone (from an Algonquin name for the plant).[8] Its berries were once used to make ink, hence its other sometimes-used common name, inkberry.

Description

[edit]
Pokeweed berries

Pokeweed is a member of the family Phytolaccaceae, and is a large herbaceous perennial plant,[9] growing up to 2.5 metres (8 feet) in height over the course of a summer.[9] One to several branches grow from the crown of a thick, white, fleshy taproot; Michael D. K. Owen describes the branches as "stout, smooth, [and] green to somewhat purplish". Simple, entire leaves with long petioles are alternately arranged along the stem.[9]

Pokeweeds reproduce only by their large, glossy black, lens-shaped seeds, which are contained in a fleshy, 10-celled, purple-to-near-black berry that has crimson juice. The flowers are perfect, radially symmetric, white or green, with 4–5 sepals and no petals. The flowers develop in elongated clusters termed racemes.[9][10] The seeds have long viability, able to germinate after many years in the soil.

Morphology

[edit]
A cluster of unripe pokeweed berries
A cluster of ripe pokeweed berries

Plant Type: Perennial herbaceous plant which can reach a height of 3 m (10 ft)[11] but is usually 1.2 to 2 m (4 to 6+1⁄2 ft). The plant must be a few years old before the root grows large enough to support this size. The stem is usually red late in the season. There is an upright, erect central stem early in the season, which changes to a spreading, horizontal form later with the weight of the berries. The plant dies back to the roots each winter. The stem has a chambered pith.

Leaves: The leaves are alternate with coarse texture with moderate porosity. Leaves can reach 41 centimetres (16 inches) in length. Each leaf is entire. Leaves are medium green and smooth, with a distinct odor that many characterize as unpleasant.

Flowers: The flowers have 5 regular parts with upright stamens and are up to 5 millimetres (1⁄4 in) wide. They have white petal-like sepals without true petals, on white pedicels and peduncles in an upright or drooping raceme, which darken as the plant fruits. Blooms first appear in early summer and continue into early fall.

Fruit: A shiny dark purple berry held in racemose clusters on pink pedicels with a pink peduncle. Pedicels without berries have a distinctive rounded five part calyx. Fruits are round with a flat indented top and bottom. Immature berries are green, turning white and then blackish purple.

Root: Thick central taproot which grows deep and spreads horizontally. Rapid growth. Tan cortex, white pulp, moderate number of rootlets. Transversely cut root slices show concentric rings. No nitrogen fixation ability.[12][failed verification][13][better source needed]

Chemistry

[edit]
Chemical structure of pokeberrygenin

The entire pokeweed plant contains triterpenes such as phytolaccagenin, jaligonic acid, phytolaccagenic acid (phytolaccinic acid), esculentic acid, and pokeberrygenin (in the berries),[14] as well as the saponins phytolaccasides A, B, D, E, and G, and phytolaccasaponins B, E, and G (in the roots).[15][16]

The roots also contain other triterpenoids such as oleanolic acid, α-spinasterol and its glucoside, α-spinasteryl-β-D-glucoside, and a palmityl-derivative, 6-palmytityl-α-spinasteryl-6-D-glucoside, as well as a similarly functionalized stigmasterol derivative, 6-palmityl-Δ7-stigmasterol-Δ-D-glucoside.[15] Pokeweed berries also contain betalain pigments such as betanin and others.[17] The leaves contain a number of common flavonols.[17] Seeds of pokeweed contain the phenolic aldehyde caffeic aldehyde.[18]

Pokeweed also contains lectins, such as pokeweed mitogen.[19]

Common names

[edit]

Phytolacca americana or pokeweed is also known as pokeberry,[9][12] poke root,[12] Virginia poke (or simply poke),[12][20] pigeonberry,[12][20] inkberry,[9] redweed or red ink plant.[20] When used in Chinese medicine, it is called chuíxù shānglù (垂序商陸)垂序商陸（全國中草藥彙編），洋商陸（中國植物圖鑑），美國商陸（華北經濟植物誌要），美洲商陸（經濟植物手冊），美商陸（杭州藥用植物誌），洋商陸(臺灣)、花商陸、野胭脂(杭州)、白雞腿(江西/Vertical Shang Lu (National Compendium of Chinese Herbal Medicine), Foreign Shang Lu (Chinese Botanical Atlas), American Shang Lu (North China Economic Plant Journal), American Shang Lu (Economic Plant Manual), American Shang Lu (Hangzhou Medicinal Plant Journal), Foreign Shang Lu (Taiwan), Florist Lu, Wild Rouge (Hangzhou), White Chicken Leg (Jiangxi.[12][21][22] As food, it is called poke sallet, or more commonly poke salad, sometimes spelled polk salad. For example, used in Tony Joe White's 1968 song "Polk Salad Annie":

Down there we have a plant that grows out in the woods, and the fields
And it looks somethin' like a turnip green
Everybody calls it polk salad
Now that's polk salad

— Tony Joe White, Polk Salad Annie

Distribution and habitat

[edit]

Pokeweed is native to eastern North America, the Midwest, the Gulf Coast, and the West Coast of the US.[23] It is an introduced weed in Japan.

Ecology

[edit]

Birds are unaffected by the poisons in the berries,[9] and eat them, dispersing the seeds. The berries are reported to be a good food source for songbirds and other bird species and small animals that are unaffected by its toxins.[24] Distribution via birds is thought to account for the appearance of isolated plants in areas otherwise free from pokeweed.[9]

Pokeweed berries are reported to be a good food source for songbirds such as gray catbird (Dumetella carolinensis), northern mockingbird (Mimus polyglottos), northern cardinal (Cardinalis cardinals), brown thrasher (Toxostoma rufum), mourning dove (Zenaida macroura), and cedar waxwing (Bombycilla cedrorum). Small mammals apparently tolerant of its toxins include raccoon, opossum, red and gray fox, and the white-footed mouse.[24][25]

Pokeweed is sometimes used as a food source by black bears.[26]

Pokeweed is used as a sometime food source by the larvae of some Lepidoptera species, including the giant leopard moth (Hypercompe scribonia).[27]

Japanese beetles defoliating poke weed leaves

Toxicity

[edit]

All parts of the plant can be toxic and pose risks to human and mammalian health.[9][28][29][30][31] Toxins are found in highest concentration in the rootstock, then leaves and stems, then the ripe fruit.[28][29] The plant generally gets more toxic with maturity,[28] with the exception of the berries, which are dangerous even while green.[31]

Children may be attracted by clusters of berries.[9] Ohio Agricultural Research and Development Center (OARDC) notes:[28]

Children are most frequently poisoned by eating raw berries. Infants are especially sensitive and have died from eating only a few raw berries. Adults have been poisoned, sometimes fatally, by eating improperly prepared leaves and shoots, especially if part of the root is harvested with the shoot, and by mistaking the root for an edible tuber. Research with humans has also shown that common pokeweed can cause mutations (possibly leading to cancer) and birth defects. Since the juice of pokeweed can be absorbed through the skin, contact of plant parts with bare skin should be avoided.

Pokeweed is to be avoided during pregnancy and children consuming even one berry may require emergency treatment.[13] The plant sap can cause dermatitis in sensitive people.[13]

The plant is not palatable to most animals and is avoided unless little else is available or it is present in contaminated hay, but horses, sheep and cattle have been poisoned by eating fresh leaves or green fodder and pigs have been poisoned by eating the roots.[28][copyright violation?]

If death occurs, it is usually due to respiratory paralysis.[9]

Pokeweed poisoning was common in eastern North America during the 19th century, especially from the use of tinctures as antirheumatic preparations and from ingestion of berries and roots that were mistaken for parsnip, Jerusalem artichoke, or horseradish.[32]

Symptoms and response to poisoning

[edit]

Owen states:[9]

If taken internally, pokeweed is a slow acting but a violent emetic. Vomiting usually starts about 2 hours after the plant or parts of it have been eaten. Severe cases of poisoning result in purging, spasms, and sometimes convulsions. If death occurs, it is usually due to paralysis of the respiratory organs. Cases of animal or human poisoning should be handled by a veterinarian or a physician.

The OARDC staff scientists note that symptoms of poisoning include "a burning sensation in the mouth, salivation, gastrointestinal cramps, and vomiting and bloody diarrhea", and that depending upon the amount consumed, more severe symptoms can occur, including "anemia, altered heart rate and respiration, convulsions and death from respiratory failure."[28] If only small quantities are ingested, people and animals recover within one to two days.[28][33]

Uses

[edit]
Woman preparing poke salad

Horticulture

[edit]

Some pokeweeds are grown as ornamental plants, mainly for their attractive berries. A number of cultivars have been selected for larger fruit panicles.[34]

Folk and alternative medicine

[edit]

Owen notes that "Indians and early settlers used the root in poultices and certain drugs for skin diseases and rheumatism."[9]

The late 19th century herbal, the King's American Dispensatory, describes various folk medical uses that led individuals to ingest pokeberry products.[35] Phytolacca extract was advertised as a prescription weight loss drug in the 1890s.[36]

Pokeweed is promoted in alternative medicine as a dietary supplement intended to treat a wide range of maladies including mumps, arthritis and various skin conditions.[37] While pokeweed has been subject to laboratory research, there is no medical evidence that it has any beneficial effect on human health.[37]

Food uses

[edit]

Poke is a traditional southern Appalachian food. The leaves and stems of young plants can be eaten, but must be cooked by boiling two or more times with the water drained and replaced each time.[11] The leaves taste similar to spinach; the stems, similar to asparagus.[38] A 1917 article on edible weeds stated that pokeweed shoots were popular in Pennsylvania, "tied in small bundles, boiled the same way as asparagus, and served with cream sauce or melted butter."[39]

The roots are poisonous, as are mature leaves and stems.[11] Some festivals still celebrate the plant's use in its historical food preparations.

As late as the 1990s two companies commercially canned and sold pokeweed, but in 2000 the last one, the Allen Canning Company of Siloam Springs, Arkansas, closed down its operation.[40]

Nutrition

[edit]
Pokeberry shoots, drained after cooking by boiling (without salt).
Nutritional value per 100 g (3.5 oz)
Energy84 kJ (20 kcal)
3.1 g
Sugars1.6 g
Dietary fiber1.5 g
0.4 g
2.3 g
Vitamins and minerals
VitaminsQuantity
%DV†
Vitamin A equiv.
48%
435 μg
48%
5200 μg
1747 μg
Thiamine (B1)
6%
0.07 mg
Riboflavin (B2)
19%
0.25 mg
Niacin (B3)
7%
1.1 mg
Vitamin B6
7%
0.111 mg
Vitamin C
91%
82 mg
Vitamin K
90%
108 μg
MineralsQuantity
%DV†
Calcium
4%
53 mg
Iron
7%
1.2 mg
Magnesium
3%
14 mg
Manganese
15%
0.336 mg
Phosphorus
3%
33 mg
Potassium
6%
184 mg
Sodium
1%
18 mg
Link to USDA Database entry
†Percentages estimated using US recommendations for adults,[41] except for potassium, which is estimated based on expert recommendation from the National Academies.[42]

A 100g serving of pokeweed contains 20 calories and 3.1 grams of carbohydrates, 1.6 grams of sugars, 1.5 grams of dietary fiber, 0.4 grams of fat, 2.3 grams of protein, and is a rich source of vitamin A, vitamin B2, vitamin C, vitamin K, and manganese. It contains low levels of vitamin B1, vitamin B6, iron, calcium, magnesium, phosphorus, and potassium.

Other uses

[edit]

Plant toxins from Phytolacca are being explored as a means to control zebra mussels.[43][44]

The toxic extract of ripe pokeweed berries can be processed to yield a pink dye.[45][46][47] Early European settlers to North America would procure a fine red dye from the plant's roots.[48]

During the middle of the 19th century wine often was coloured with juice from pokeberries.[49]

Phytolacca contains lectins known as Pokeweed mitogen which are used to stimulate B-cell proliferation which is useful for B-cell assays, immunodeficiency diagnostic test, and immunotherapy.[50]

Cultural significance

[edit]

In music

[edit]

A 1969 hit written and performed by Tony Joe White, "Polk Salad Annie", is about poke sallet, the cooked greens-like dish made from pokeweed. The lyrics include:[51][52]

And in the fields looks somethin' like a turnip green
And everybody calls it polk salad, polk salad

Elvis Presley covered the song.

In local Southern festivals

[edit]

Poke salad festivals are held annually in several small southern towns, though often these celebrations are only remotely related to the plant as food or medicine (see [53] and individual festival references below). Locations include:

In Oklahoma, poke salad may be added to the annual wild onion dinners.[58]

References

[edit]
  1. ^ "NatureServe Explorer 2.0". explorer.natureserve.org.
  2. ^ "The Plant List: A Working List of All Plant Species". Theplantlist.org. Retrieved 15 August 2015.
  3. ^ "Flora of China online", Efloras.org, retrieved 15 August 2015
  4. ^ "Phytolacca americana (American Pokeweed, Common Pokeweed, Garnet, Pidgeon Berry, Poke, Pokeberry, Pokeweed, Scoke) | North Carolina Extension Gardener Plant Toolbox". Plants.ces.ncsu.edu.
  5. ^ "Tropicos | Name - Phytolacca americana L. Var. Americana". Legacy.tropicos.org.
  6. ^ Oneto, Scott (August 15, 2018). "Pokeweed: A giant of a weed!". Agriculture and Natural Resources, University of California.
  7. ^ "Pokeweed: A giant of a weed!". ANR Blogs.
  8. ^ "Phytolacca americana L. American Pokeweed Family" (PDF). New York Botanical Garden.
  9. ^ a b c d e f g h i j k l m Michael D. K. Owen (1988). "Pokeweed (Phytolacca americana L.)" (PDF). Publication Pm-746 of the Iowa State University Extension Service, Ames, IA. Iowa State University. Retrieved 2 May 2015.
  10. ^ Each flower has 10 stamens and a 10-cell pistil and gives rise to a 10-celled berry
  11. ^ a b c Elias, Thomas S.; Dykeman, Peter A. (2009) [1982]. Edible Wild Plants: A North American Field Guide to Over 200 Natural Foods. New York: Sterling. pp. 96, 267. ISBN 978-1-4027-6715-9. OCLC 244766414.
  12. ^ a b c d e f USDA-ARS, 2015, "Taxon: Phytolacca americana L.," at National Genetic Resources Program.Germplasm Resources Information Network – (GRIN) [Online Database], National Germplasm Resources Laboratory, Beltsville, Maryland, see [1][permanent dead link‍], accessed 2 May 2015.
  13. ^ a b c Anon., 2015, "Entry: Phytolacca americana – L.," at Plants For A Future (organizational webpage), see [2], accessed 2 May 2015.
  14. ^ Kang, S.S. & Woo, W.S. (1980). "Triterpenes from the berries of Phytolacca americana". J. Nat. Prod. 43 (4): 510–3. doi:10.1021/np50010a013.
  15. ^ a b Suga, Y.; Maruyama, Y.; Kawanishi, S.; Shoji, J. (1978). "Studies on the constituents of phytolaccaceous plants. I. On the structures of phytolaccasaponin B, E and G from the roots of Phytolacca americana L". Chem. Pharm. Bull. 26 (2): 520–5. doi:10.1248/cpb.26.520.
  16. ^ Tang, W.; Eisenbrand, G. (1992). Chinese Drugs of Plant Origin: Chemistry, Pharmacology, and Use in Traditional and Modern Medicine. New York, NY: Springer-Verlag. p. 765.
  17. ^ a b Iwashina, T.; Kitajima, J. (2009). "Flavonoids from the leaves of betalain-containing species, Phytolacca americana (Phytolaccaceae)". Bulletin of the National Museum of Nature and Science. Series B, Botany. 35 (2): 99–104. ISSN 1881-9060. Retrieved 2020-10-18.
  18. ^ Woo, W.S., Kang, S.S., 1979. A new phenolic aldehyde from the seeds of phytolacca americana. Soul Taehakkyo Saengyak Yonguso Opjukjip 18, 30–31.
  19. ^ Bekeredjian-Ding, Isabelle; Foermer, Sandra; Kirschning, Carsten J.; Parcina, Marijo; Heeg, Klaus (2012-01-04). "Poke Weed Mitogen Requires Toll-Like Receptor Ligands for Proliferative Activity in Human and Murine B Lymphocytes". PLOS ONE. 7 (1): e29806. Bibcode:2012PLoSO...729806B. doi:10.1371/journal.pone.0029806. PMC 3251602. PMID 22238657.
  20. ^ a b c Bailey, L.H., Bailey, E.Z., and the staff of the Liberty Hyde Bailey Hortorium, 1976, Hortus third: A concise dictionary of plants cultivated in the United States and Canada, New York, NY:Macmillan, ISBN 978-0-02-505470-7, see [3], accessed 2 May 2015.
  21. ^ Further unlisted names that appear in Hortus Third (Bailey, Bailey, et al., 1976, op. cit.) include: cancer jalap, oakum, garget, pocan, and scoke.
  22. ^ Further unlisted names that appear at WebMD include American Nightshade, American Spinach, Baie de Phytolaque d'Amérique, Bear's Grape, Branching Phytolacca, Cancer Jalap, Chongras, Coakum, Coakum-Chorngras, Cokan, Crowberry, Épinard de Cayenne, Épinard des Indes, Faux Vin, Fitolaca, Garget, Herbe à la Laque, Hierba Carmin, Jalap, Kermesbeere, Laque, Phytolacca Berry, Phytolacca americana, Phytolacca decandra, Phytolaque Américaine, Phytolaque à Baies, Phytolaque Commun, Phytolaque d'Amérique, Pocan, Raisin d'Amérique, Red Plant, Scoke, Skoke, Teinturier, Teinturière, Vigne de Judée. See WebMD, 2015, "Pokeweed," at WebMD: Vitamin and Supplement (online), [4], accessed 2 May 2015.
  23. ^ "Plant Profile:Phytolacca americana L., American pokeweed". USDA Natural Resources Conservation Service: PLANTS Database. Retrieved 16 November 2017.
  24. ^ a b Nancy L. Matthews, 1987, "Appendix F: Hab itat Assessment Manual," in Report: Anne Arundel Co., Offc. Planning and Zoning, Environmental and Special Projects Div., to Office of Coastal Resources Management, NOAA and State of Maryland Chesapeake Bay Critical Area Commission, August 1987, 9 pages, passim see [5], accessed 2 May 2015.
  25. ^ Other birds reported to include pokeweed in their diets include bluebirds, crested flycatchers, fish crows, hairy woodpeckers, kingbirds, phoebes, robins, starlings, and yellaw-breasted chats, see Matthews, 1987, op. cit.
  26. ^ Najar, Jamie (2020-05-15). "Comparison of black bear diets in eastern Oklahoma across seasons and regions". Shareok: 6.
  27. ^ Donald W. Hall, 2015, "Giant woolly bear (larva), giant or great leopard moth (adult) [scientific name: Hypercompe scribonia (Stoll 1790) (Lepidoptera: Erebidae: Arctiinae)]," at Institute of Food and Agricultural Sciences: Featured creatures, Gainesville, FL:Florida Department of Agriculture and Consumer Services, Division of Plant Industry, Table 1, see "Giant woolly bear, great leopard moth - Hypercompe scribonia (Stoll 1790)". Archived from the original on 2015-09-20. Retrieved 2015-05-03., accessed 2 May 2–15.
  28. ^ a b c d e f g John Cardina; Cathy Herms; Tim Koch; Ted Webster (2015). "Entry: Common Pokeweed, Phytolacca americana". Ohio Perennial and Biennial Weed Guide. Wooster, OH: Ohio Agricultural Research and Development Center (OARDC). Archived from the original on 16 March 2015. Retrieved 2 May 2015.
  29. ^ a b Jacob L. Heller (October 21, 2013). "Pokeweed poisoning". MedlinePlus. Retrieved 2 May 2015.
  30. ^ CBIF CPPIS (June 5, 2013). "All Plants (Scientific Name): Phytolacca americana". Canadian Biodiversity Information Facility, Species Bank, Canadian Poisonous Plants Information System. Retrieved 2 May 2015.
  31. ^ a b Amitava Dasgupta (2011). Effects of Herbal Supplements on Clinical Laboratory Test Results. Vol. 2, Patient Safety. Walter de Gruyter. ISBN 978-3110245622. Retrieved 2 May 2015.
  32. ^ Lewis, W. H.; Smith, P. R. (December 1979). "Poke root herbal tea poisoning". J. Am. Med. Assoc. 242 (25): 2759–60. doi:10.1001/jama.242.25.2759. PMID 501875.
  33. ^ One study performed in Oklahoma in 1962 concluded that the oral lethal dose of fresh poke berries in mice was about 300 gm/kg body weight and for dry berries was about 100 gm/kg body weight, and that liquid berry extract was 80 times as toxic when injected intraperitoneally as when taken orally. See Ogzewalla; Mossberg; Beck; Farrington (1962). "Studies on the Toxicity of Poke Berries" (PDF). Proc. of the Okla. Acad. Of Sci.: 54–57. Archived from the original (PDF) on 2018-12-19.
  34. ^ "Phytolacca americana American pokeweed". Royal Horticultural Society. 2017. Retrieved 16 November 2017. White-pink flowers appear in racemes from mid-summer to early autumn, followed by crimson-black berries in autumn
  35. ^ John King, Harvey Wickes Felter & John Uri Lloyd, 1898, "Entry: Phytolacca," in King's American Dispensatory, Cincinnati : Ohio Valley Co., see [6] and [7], accessed 2 May 2015.
  36. ^ The Medical and surgical reporter (69th, July–Dec 1893 ed.). Philadelphia, Pa.: Crissy & Markley, Printers. 1858. p. 1561.
  37. ^ a b Ades TB, ed. (2009). "Pokeweed". American Cancer Society Complete Guide to Complementary and Alternative Cancer Therapies (2nd ed.). American Cancer Society. pp. 466–469. ISBN 978-0-944235-71-3.
  38. ^ Smith, Andrew (2013-01-31). The Oxford Encyclopedia of Food and Drink in America. OUP USA. ISBN 978-0-19-973496-2.
  39. ^ Scott, Mrs. Anna B. (June 1917). "In These Days of High Prices". The Ladies' Home Journal. Vol. 34. p. 41. hdl:2027/mdp.39015018052467. Retrieved 2024-03-07 – via HathiTrust.
  40. ^ "Pokeweed: Prime Potherb". Eattheweeds.com. 31 August 2011. Retrieved 2024-05-20.
  41. ^ United States Food and Drug Administration (2024). "Daily Value on the Nutrition and Supplement Facts Labels". FDA. Archived from the original on 2024-03-27. Retrieved 2024-03-28.
  42. ^ National Academies of Sciences, Engineering, and Medicine; Health and Medicine Division; Food and Nutrition Board; Committee to Review the Dietary Reference Intakes for Sodium and Potassium (2019). "Chapter 4: Potassium: Dietary Reference Intakes for Adequacy". In Oria, Maria; Harrison, Meghan; Stallings, Virginia A. (eds.). Dietary Reference Intakes for Sodium and Potassium. The National Academies Collection: Reports funded by National Institutes of Health. Washington, DC: National Academies Press (US). pp. 120–121. doi:10.17226/25353. ISBN 978-0-309-48834-1. PMID 30844154. Retrieved 2024-12-05.
  43. ^ Harold H. Lee, Lemma Aklilu, and Harriett J. Bennett, 1992, The use of Endod (Phytolacca dodecandra) to Control the Zebra Mussels (Dreissena polymorpha), Chapter 37, pp. 643–656, in Zebra Mussels Biology, Impacts, and Control, Thomas F. Nalepa & Don W. Schloesser, Eds., Boca Raton, FL:CRC Press, ISBN 0873716965, see [8], accessed 5 May 2015.
  44. ^ US application 5252330, Harold H. Lee; Peter C. Fraleigh & Lemma Aklilu, "Method of controlling zebra mussels with extract of Phytolacca dodecandra", published 1993-10-12, assigned to University of Toledo. 
  45. ^ Pesha Black & Micah Hahn, 2004, "Pokeweed, Phytolacca americana, Family: Phytolaccaceae," at [Guide to] Practical Plants of New England (student project pages), see "Pokeweed". Archived from the original on 2015-02-17. Retrieved 2015-05-03., accessed 2 May 2015.
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  48. ^ Kalm, Pehr (1772). Travels into North America: containing its natural history, and a circumstantial account of its plantations and agriculture in general, with the civil, ecclesiastical and commercial state of the country, the manners of the inhabitants, and several curious and important remarks on various subjects. Translated by Johann Reinhold Forster. London: T. Lowndes. pp. 74-75. ISBN 978-0-665-51500-2. OCLC 1083889360.
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  51. ^ Doppelbauer, Martin (2008). "Tony Joe White – His Music". Archived from the original on May 3, 2015. Retrieved May 2, 2015.
  52. ^ White, Tony Joe (1969). "Polk Salad Annie [Lyrics]". New York, NY: Sony/ATV Music Publishing. Archived from the original on 2016-03-04. Retrieved May 2, 2015.
  53. ^ a b APSFA, 2015, "Schedule of Events," at The Annual Poke Salad Festival Association, Annual Poke Salad Festival, Blanchard, Louisiana, at "Maranto". Archived from the original on 2015-03-25. Retrieved 2015-05-03., accessed 2 May 2015.
  54. ^ "Poke Sallet Festival ['Browngrass will join them ... ']". The Jackson County Sentinel (Online ed.). April 28, 2015. p. 4. Archived from the original on 2015-05-05. Retrieved May 2, 2015.
  55. ^ "Poke Sallet Festival Pageant". The Jackson County Sentinel (Online ed.). April 21, 2015. p. 3. Archived from the original on 2015-05-05. Retrieved May 2, 2015.
  56. ^ "Poke Sallet Festival". Facebook Events. Gainesboro, Tennessee. Retrieved May 2, 2015. "This year will mark the 37th Annual Poke Sallet Festival "The Oldest Poke Sallet Festival in the state of Tennessee" Come and join us on Thursday May 7th, Friday May 8th and Saturday May 9th 2015 In Historical Downtown Gainesboro. Look for details that will be featured in a 16 page insert in the April 28 issue of the Jackson County Sentinel."
  57. ^ "Harlan County Poke Sallet Festival – Home". Pokesalletfestival.xom. Retrieved 5 April 2016.
  58. ^ Milbauer, John A. "Wild Onion Dinners." Oklahoma History Center's Encyclopedia of Oklahoma History and Culture. (retrieved 2 March 2010)

Further reading and viewing

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  • P.A.G.M. De Smet, 1993, "Phytolacca americana," in Adverse Effects of Herbal Drugs, Volume 2 (Peter A. G. M. Smet, Konstantin Keller, Rudolf Hänsel, & R. Frank Chandler, Eds.), Berlin:Springer Science & Business Media, ISBN 3-642-48906-0
  • ACS, 2008, "Entry: Pokeweed," at Find Support & Treatment; Treatments and Side Effects Complementary and Alternative Medicine; Herbs, Vitamins, and Minerals, see ACS Pokeweed entry Archived 2015-05-02 at the Wayback Machine, accessed 2 May 2015.
  • Tyler, V. E.; Brady, L. R. & Robbers, J. E., 1988, "Poisonous plants," in Pharmacognosy, 9th ed. Philadelphia:Lea and Febiger, Chapter 15, pp. 438–455.
  • Elvin-Lewis, Memory P. F.; Lewis, Walter Hepworth (2003). Medical Botany: Plants Affecting Human Health (2nd ed.). Chichester: John Wiley & Sons. pp. 82ff. ISBN 978-0-471-62882-8.
  • "Tony Joe White – Polk Salad Annie," performance, date unknown, at Tony Joe White – Polk Salad Annie, accessed 2 May 2015.
  • "Tony Joe White and Johnny Cash," performance, 1970, "Polk Salad (Poke Salit) Annie," from Johnny Cash Show, episode no. 27, April 8, 1970, at LiveLeak (online), see Tony Joe White & Johnny Cash-Polk Salad Annie, accessed 2 May 2015.
  • Brennan Carley, 2014, "Foo Fighters Join Tony Joe White on Bluesy 'Polk Salad Annie' on 'Letterman'," Spin (online), October 16, 2014, see Foo Fighters Join Tony Joe White on Bluesy 'Polk Salad Annie' on 'Letterman', accessed 2 May 2015.
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