Sunn hemp (Crotalaria juncea) is a species of plant in the Fabaceae family, erect, woody shrub, growing up to 2 meters tall, cylindrical stems, angular, green with white hairs. The leaves are elongated, green and thick, up to 20 cm long and up to 4 cm wide. The petioles are up to 1 cm long.
The inflorescences are yellow in long panicles. The fruit is an elongated, oval capsule, 3 cm long, with a 1 cm stalk and white hairs. The seeds are shiny, 2-3 mm long capsules.
TAXON
Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Magnoliopsida
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Tribe: Crotalarieae
Genus: Crotalaria L. in Sp. Pl.: 714 (1753)
Species: Crotalaria juncea L. in Sp. Pl.: 714 (1753)
HETEROTYPIC SYNONYMS
Crotalaria benghalensis Lam. in Encycl. 2: 196 (1786)
Crotalaria cannabinua Royle in Ill. Bot. Himal. Mts.: 82 (1834)
Crotalaria fenestrata Sims in Bot. Mag. 44: t. 1933 (1817)
Crotalaria juncea var. bengalensis (Lam.) Kuntze in Revis. Gen. Pl. 1: 176 (1891)
Crotalaria juncea var. puncticulata DC. in Prodr. 2: 126 (1825)
Crotalaria kanchiana Gholave, Mane, Gore, Kambale & S.P.Gaikwad in Phytotaxa 409: 234 (2019)
Crotalaria porrecta Wall. in Numer. List: n.° 5363 (1831)
Crotalaria sericea Willd. in Sp. Pl., ed. 4. 3: 519 (1800)
Crotalaria tenuifolia Roxb. ex Hornem. in Suppl. Hort. Bot. Hafn.: 151 (1819) Isotropis argentea Ewart & Morrison in Proc. Roy. Soc. Victoria, n.s., 26: 157 (1913)
PUBLICATIONS
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Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.
Hedberg, I. & Edwards, S. (eds.) (1989 publ. 1990). Flora of Ethiopia and Eritrea 3: 1-659. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
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Kotiya, A., Solanki, Y. & Reddy, G.V. (2020). Flora of Rajasthan: 1-769. Rajasthan state biodiversity board.
Kumar, S. & Sane, P.V. (2003). Legumes of South Asia. A Checklist: 1-536. Royal Botanic Gardens, Kew.
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Lock, J.M. & Ford, C.S. (2004). Legumes of Malesia a Check-List: 1-295. Royal Botanic Gardens, Kew.
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Lock, J.M. (1989). Legumes of Africa a check-List: 1-619. Royal Botanic Gardens, Kew.
Nelson Sutherland, C.H. (2008). Catálogo de las plantes vasculares de Honduras. Espermatofitas: 1-1576. SERNA/Guaymuras, Tegucigalpa, Honduras.
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Polhill, R.M. (1990). Flore des Mascareignes 80: 1-235. IRD Éditions, MSIRI, RBG-Kew, Paris.
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Rechinger, K.H. & al. (1984). Papilionaceae II. Flora Iranica 157: 1-499. Naturhistorisches Museums Wien.
Sanjappa, M., Pusalkar, P.K. & Mao, A.A. (eds.) (2024). Flora of India 6: 1-556. Botanical Survey of India.
Silva Flores, A. & De Azevedo Tozzi, A.M.G. (2018). A synopsis of the genus Crotalaria (Leguminosae) in Brazil. Phytotaxa 346: 31-58.
Thiombiano, A., Schmidt, M., Dressler, S., Ouédraogo, A., Hahn, K. & Zizka, G. (2012). Catalogue des plantes vasculaires du Burkina Faso. Boissiera 65: 1-391.
Townsend, C.C. (1974). Flora of Iraq 3: 1-662. Ministry of Agriculture & Agrarian Reform, Baghdad.
Velayos, M. & al. (eds.) (2015). Flora de Guinea Ecuatorial 5: 1-529. Consejo superior de investigaciones científicas, Real jardín botánico, Madrid.
Wu, Z. & Raven, P.H. (eds.) (2010). Flora of China 10: 1-642. Science Press (Beijing) & Missouri Botanical Garden Press (St. Louis).
Yakovlev, G.P., Sytin, A.K. & Roskov, Y.R. (1996). Legumes of Northern Eurasia. A checklist: 1-724. Royal Botanic Gardens, Kew.
Zhu, X.Y., Zhang, R.P. & He, Y.L. (eds.) (2021). An inventory of legume species diversity of Myanmar: 1-297. China Minzu university press.
Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur. Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348. Missouri Botanical Garden.
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VERNACULAR NAME
Afrikaans: Suikerkeur, Sunnhennep
Chinese (simplified): 太阳麻 - 菽麻
Chinese (traditional): 太陽麻 - 菽麻
English: Sunn hemp, Sunnhemp, Indian hemp, Benares hemp, Madras hemp, Brown hemp, Deccan Hemp
Finnish: Kuituherne
Hindi: Masina, Sannai Sunn
Indonesia: Orok-orok
Italian: Canapa indiana
Japanese: サンヘンプ - クロタラリア
Malayalam: Chanaka, Chanambu, Dhunam, Kattuthanatalakatta, Pulivanni, Sanam, Wuckoonar
Marathi: धाकटी घागरी
Ojibwe: Zesabiins
Oria: Choni, Chanapata
Russian: Кроталярия ситниковая
Sanskrit: Jenapavera, Pulivanji
Slovak: Krotalária textilná
Swedish: Sunnhampa
Tamil: Sanppu, Janupa, Sanalnar, Sanarppai
Telugu: Shanama, Janumu, Gilaka, Gili Ginta
Thai: ปอเทือง
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