Biology:Senna obtusifolia

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Short description: Species of legume

Senna obtusifolia

Secure (NatureServe)
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Genus: Senna
Species:
S. obtusifolia
Binomial name
Senna obtusifolia
(L.) H.S.Irwin & Barneby[2]
Synonyms[2]
  • Cassia obtusifolia L.
  • Cassia tora var. obtusifolia (L.) Haines
  • Emelista obtusifolia (L.) Raf.
  • Senna tora var. obtusifolia (L.) X.Y.Zhu
  • Cassia rogeonii Ghesq.
  • Cassia tora var. humilis Pers.
  • Cassia toroides Raf.
  • Senna toroides Roxb.

Senna obtusifolia, known by common names including Chinese senna, American sicklepod and sicklepod, is a plant in the genus Senna, sometimes separated in the monotypic genus Diallobus. It grows wild in North, Central, and South America, Asia, Africa, and Oceania, and is considered a particularly problematic weed in many places. It has a long-standing history of confusion with Senna tora and that taxon in many sources actually refers to the present species.

In the traditional medicine of Eastern Asia, the seeds are called jué míng zǐ in Chinese (simplified: 决明子; traditional: 決明子), gyeolmyeongja in Korean, and ketsumeishi in Japanese.

The green leaves of the plant are fermented to produce a high-protein food product called kawal which is eaten by many people in Sudan as a meat substitute. Its leaves, seeds, and root are also used in folk medicine, primarily in Asia. It is believed to possess a laxative effect, as well as to be beneficial for the eyes. As a folk remedy, the seeds are often roasted, then boiled in water to produce sicklepod tea. The plant's seeds are a commercial source of cassia gum, a food additive usually used as a thickener and named for the Chinese Senna's former placement in the genus Cassia. Roasted and ground, the seeds have also been used as a substitute for coffee. In vitro cultures of S. obtusifolia such as hairy roots may be a source of valuable secondary metabolites with medical applications.[3]

Taxonomy and naming

This species was first formally described in 1753 by Carl Linnaeus who gave it the name Cassia obtusifolia in Species Plantarum.[4][5] In 1979, Howard Samuel Irwin and Rupert Charles Barneby transferred the species to the genus Senna as S. obtusifolia in the Memoirs of the New York Botanical Garden.[6][7] The specific epithet (obtusifolia) means "blunt-leaved".[8]

S. obtusifolia is known by a number of common names. Apart from "sicklepod",[9] sickle-pod senna,[10] rarely "Chinese senna"[11] or even "American sicklepod",[12] it is also called arsenic weed,[13] foetid cassia, or wild senna.[10]

It is also known locally by common names such as "coffee weed" (coffeeweed)[14] or "java bean" (in Australia)[14] or "coffee pod" (in the American South or West),[15][13] although the terms "coffee weed" or "coffee pod" are ambiguous as they also apply to S. tora.[9] It may be called by the Hindi name "chakunda" in India, but this is also one of the names for S. tora.[9]

Names in its native range are also:

Distribution and habitat

Senna obtusifolia naturally occurs in tropical and subtropical regions of the Americas, but has been introduced to Africa, parts of Europe, the Middle East, the Indian subcontinent, parts of Southeast Asia, New Guinea and parts of Australia.[2] Its nativity in the North America disputed, but it is usually considered to be native to the Southeastern United States,[20][21] while others also consider it to be native to the eastern and central U.S. north to New York.[22][23][24] However, the earliest records in North America date to the early to mid 1800s.[25] In its natural environment, it grows on the shores of lakes and rivers, but is also a weed of pastures and roadsides at altitudes up to 1,100 m (3,600 ft).[7]

Ecology

Senna obtusifolia is non-nodulating and does not have a symbiotic association with soil bacteria, unlike other members of the family Fabaceae. Senna obtusifolia is usually self pollinated as many flowers being fertilized before opening,[21] though the flowers are heavily visited by bees.[26] Senna obtusifolia has one (in Caribbean and North American forms) to two (in South American forms) extrafloral nectaries on the upper surface of the rachis[21] that usually attract ants, but occasionally attracts wasps, flies and small bees. It serves as a host plant for several Lepidoptera and other insects including Eurema lisa, Eurema nicippe, Phoebis sennae cubule[27] and Calycomyza malvae.[28] Northern bobwhite and greater prairie chickens are known to feed on the seeds. Mammalian herbivory is rare due to the foliage's foul taste and toxicity, which is known to poison livestock.[27]

Traditional Eastern medicine

The materia medica name for the seeds in Chinese is jué míng zǐ (simplified: 决明子; traditional: 決明子).[29] The medicinal seeds are also known by the equivalent Korean name gyeolmyeongja (결명자; 決明子) in traditional Korean medicine,[30] and by the Japanese name ketsumei-shi (ケツメイシ, 決明子) in kampō medicine.[31]

The jue ming zi is used widely in Asia, including Southeast Asian countries such as Thailand,[31][32] and its herbal sicklepod tea is drunk instead of regular tea as a preventative for hypertension.[31][32] It is also purported to have the ability to clear the eye.[31] In Korea also, medicinal gyeolmyeongja is usually prepared as tea (gyeolmyeongja-cha, "sickle pod tea").

Senna tora (Cassia tora) is used similarly, and though distinguished in the Chinese market as the "little/lesser" variety or shao jue ming 小決明)[32] the Japanese government's [pharmacopoeia] (Nihon yakkyokuhō) officially acknowledges both S. obtusifolia and S. tora to be commerced as ketsumeishi.[32]

The Japanese beverage habu-cha (ハブ茶), as the name suggests, was originally brewed from the seeds of the habusō or S. occidentalis, but currently marketed habu-cha uses S. obtusifolia as substitute, since it is a higher-yielding crop.[33][34]

Western medicine

The antimicrobial activity of leaf extracts of Senna obtusifolia have been studied.[35]

Meat substitute

Kawal, a protein-rich meat substitute eaten in Sudan, is produced by crushing the leaves of the plant into a paste which is then traditionally fermented in an earthenware jar, buried in a cool place. The jar is dug up every three days and the contents mixed. After two weeks, the paste is removed and rolled into balls which are left to dry in the sun. They are usually cooked in stews with onions and okra.[36][37]

See also

  • Sicklepod tea
  • Chamaecrista nomame - Chamaecrista sp. (Japanese: kawaraketsumei lit. 'riverside sicklepod')

References

  1. ↑ Bachman, S. (2018). "Senna obtusifolia". IUCN Red List of Threatened Species 2018. 
  2. ↑ 2.0 2.1 2.2 "Senna obtusifolia". Plants of the World Online. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:234560-2#synonyms. 
  3. ↑ Kowalczyk, Tomasz; Sitarek, Przemysław; Toma, Monika; Picot, Laurent; Wielanek, Marzena; Skała, Ewa; Śliwiński, Tomasz (2020-03-27). "An Extract of Transgenic Senna obtusifolia L. hairy roots with Overexpression of PgSS1 Gene in Combination with Chemotherapeutic Agent Induces Apoptosis in the Leukemia Cell Line". Biomolecules 10 (4): 510. doi:10.3390/biom10040510. ISSN 2218-273X. PMID 32230928. 
  4. ↑ "Senna obtusifolia". https://id.biodiversity.org.au/instance/apni/549419. 
  5. ↑ Linnaeus, Carl (1753). Species Plantarum. 1. Berlin: Junk. p. 377. https://www.biodiversitylibrary.org/item/84235#page/387/mode/1up. Retrieved 12 August 2023. 
  6. ↑ "Senna obtusifolia". Australian Plant Name Index. https://biodiversity.org.au/nsl/services/rest/instance/apni/531776. 
  7. ↑ 7.0 7.1 Irwin, Howard S.; Barneby, Rupert C. (1982). "The American Cassiinae: a synoptical revision of Leguminosae tribe Cassieae subtribe Casiinae in the New World". Memoirs of the New York Botanical Garden 35 (1): 252–255. http://mertzdigital.nybg.org/digital/collection/p9016coll16/id/4160/rec/4. Retrieved 12 August 2023. 
  8. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 263. ISBN 978-0-9580341-8-0. 
  9. ↑ 9.0 9.1 9.2 CRC World Dictionary of Plant Names: Common Names, Scientific Names, Eponyms. Synonyms, and Etymology. 4. 1999. pp. 2460, 2461. ISBN 9780849326783. https://books.google.com/books?id=zIOvJSJs-IkC&pg=PA2460. 
  10. ↑ 10.0 10.1 10.2 Gardner, Zoë; McGuffin, Michael (2013). American Herbal Products Association's Botanical Safety Handbook (2 ed.). CRC Press. p. 804. ISBN 9781466516946. https://books.google.com/books?id=UdcZ2bttXaMC&pg=PA804. 
  11. ↑ Library of Congress Subject Headings. Library of Congress, Cataloging Distribution Service. 2009. p. 1449. https://books.google.com/books?id=QgjOCnjuuxMC&pg=PA1449. 
  12. ↑ (xls) BSBI List 2007, Botanical Society of Britain and Ireland, https://bsbi.org/download/3542/, retrieved 2014-10-17 
  13. ↑ 13.0 13.1 DiTomaso, Joseph M. (2007). Weeds of California and Other Western States: Aizoaceae-Fabaceae. University of California Division of Agriculture and Natural Resources. p. 800. ISBN 9781879906693. https://books.google.com/books?id=musfAQAAIAAJ&q=%22coffee+pod%22. 
  14. ↑ 14.0 14.1 "Senna obtusifolia (sicklepod)". CABI—Invasive Species Compendium. 21 November 2019. https://www.cabi.org/isc/datasheet/49593. 
  15. ↑ Gibbons, Whit; Haynes, Robert R.; Geller, Robert J. (1990). Poisonous Plants and Venomous Animals of Alabama and Adjoining States. Joab L. Thomas (foreword). University of Alabama Press. p. 102. ISBN 9780817304423. https://books.google.com/books?id=SIvLteYdVqQC&pg=PA102. 
  16. ↑ Yan, Kun-ying (1970). Chángyòng zhōngyào zhī yàolǐ. 5. Taipei: Guo li Zhongguo yi yao yan jiu suo. p. 800. ISBN 9789570094169. https://books.google.com/books?id=SKFttN4FWH8C&q=決明子. 
  17. ↑ Balick, Michael J. (2009). Ethnobotany of Pohnpei: Plants, People, and Island Culture. University of Hawaii Press. p. 394. ISBN 9780824837495. https://books.google.com/books?id=14wBEAAAQBAJ&pg=PA394. 
  18. ↑ Mori, Akihiko (2020) (in ja). Kika & gairai shokubutsu miwake manyuaru 950shu. 7. Shuwa System. p. 224. ISBN 9784798057927. https://books.google.com/books?id=TfQLEAAAQBAJ&pg=PA224. 
  19. ↑ Balawant Singh, Thakur; Chunekar, K. C. (1972). Glossary of Vegetable Drugs in Brhattrayī. Chowkhamba Sanskrit Series Office. p. 260. 
  20. ↑ "Senna obtusifolia — sickle-pod wild senna". Native Plant Trust. https://gobotany.nativeplanttrust.org/species/senna/obtusifolia/. 
  21. ↑ 21.0 21.1 21.2 Sosnoskie, Lynn M.; Steckel, Sandy; Steckel, Lawrence E. (6 September 2021). "Sicklepod [Senna obtusifolia (L.) H. S. Irwin & Barneby] "Getting sleepy?"". Weed Technology 35 (6): 1052–1058. doi:10.1017/wet.2021.70. 
  22. ↑ "Senna obtusifolia (L.) Irwin & Barneby". U.S. Department of Agriculture. https://plants.usda.gov/home/plantProfile?symbol=SEOB4. 
  23. ↑ "Senna obtusifolia". https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=369266. 
  24. ↑ "Senna obtusifolia (L.) H.S.Irwin & Barneby". The Institute for Regional Conservation. https://regionalconservation.org/ircs/database/plants/PlantPageFK.asp?TXCODE=Sennobtu. 
  25. ↑ "Senna obtusifolia". Institute for Systematic Botany. https://florida.plantatlas.usf.edu/plant.aspx?id=2262. 
  26. ↑ Retzinger Jr., E. James (September 1984). "Growth and Development of Sicklepod (Cassia obtusifolia) Selections". Weed Technology 32 (5): 608–611. doi:10.1017/S0043174500059658. 
  27. ↑ 27.0 27.1 Hilty, John. "Sicklepod Senna obtusifolia". https://www.illinoiswildflowers.info/prairie/plantx/sicklepodx.htm. 
  28. ↑ "Calycomyza malvae Burgess 1880". National Museum of Natural History. https://api.eol.org/pages/733581. 
  29. ↑ Chang, Zhangfu; Liu, Li; Bare, James (2015). Chinese Materia Medica. PMPH-USA. pp. 123–124. ISBN 9787117196475. https://books.google.com/books?id=knwWDgAAQBAJ&pg=PA123. 
  30. ↑ Kim, Taejung (1996) (in ko). Yag-idoeneunhangug-uisan-yacho. Kugil Media. p. 88. ISBN 9788974250751. https://books.google.com/books?id=V_KZAAAAIAAJ&q=决明子. 
  31. ↑ 31.0 31.1 31.2 31.3 Wang, Yuan; Sheir, Warren; Ono, Mika (2010). Ancient Wisdom, Modern Kitchen: Recipes from the East for Health, Healing, and Long Life. Hachette Books. p. 23. ISBN 9780738214054. https://books.google.com/books?id=hDBKXgtDP9cC&pg=SL14-PA23. 
  32. ↑ 32.0 32.1 32.2 32.3 Kijima, Masao (1969). "Tai koku shōyaku no kōsatsu III" (in ja). Japanese Journal of Southeast Asian Studies 7 (1): 78–79. http://hdl.handle.net/2433/55564. 
  33. ↑ Okada, Minoru; Wada, Hiroshi (2002) (in ja). Shintei genshoku makino wakan yakusō daizukan. Hokuryukan. pp. 204, 205. ISBN 9784832608108. https://books.google.com/books?id=iDsQAQAAMAAJ&q=%22ハブ茶%22. 
  34. ↑ Tōhō University, Yakugakubu fuzoku yakuyō shokubutsuen (medicinal herbarium attached to pharmacology dept.) (May 2019). "Ebsisugusa" (in ja). Yakuyō shokubutsuen mihon-en. https://www.lab2.toho-u.ac.jp/phar/yakusou/mihon/ebisugusa.html. 
  35. ↑ Doughari, J.H.; El-Mahmood, A.M.; Tyoyina, S.P. (2008). "Antmicrobial activity of leaf extracts of Senna obtusifolia.". African Journal of Pharmaceuticals and Pharmacology 2: 7–13. 
  36. ↑ Dirar, Hamid (1 July 1984). "Kawal, meat substitute from fermented Cassia obtusifolia leaves". Economic Botany 38 (3): 342–349. doi:10.1007/bf02859013. Bibcode: 1984EcBot..38..342D. 
  37. ↑ "Plants that provide a protein-rich diet". New Scientist 107 (1468): 30. 8 August 1985. ISSN 0028-6664. 

Bibliography

  • International Legume Database & Information Service (ILDIS) (2005): Genera Cassia and Senna. Version 10.01, November 2005. Retrieved 2007-12-17.
  • {{citation

| mode = cs1 | title = Senna obtusifolia | work = Germplasm Resources Information Network (GRIN) | url = | publisher = [[Organization:Agricultural Research ServAgricultural Research Service (ARS), United States Department of Agriculture (USDA) | access-date = 2007-12-20 }}

Wikidata ☰ Q1378803 entry



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