Taxon: Dioscorea polystachya Turcz.

Genus: Dioscorea
Family: Dioscoreaceae
Nomen number: 14241
Place of publication: Bull. Soc. Imp. Naturalistes Moscou 10(7):158. 1837
Name Verified on: 24-Mar-2006 by ARS Systematic Botanists. Last Changed: 24-Mar-2006
Species priority site is: Natl. Germplasm Repository - Miami (MIA)
Accessions: 7 in National Plant Germplasm System

Common names:

Economic Importance:

  • Environmental: ornamental (fide J Arn Arb 70:73. 1989, as Dioscorea oppositifolia)
  • Human food: starch (fide Dict Econ Pl, as D. batatas)
  • Human food: vegetable (fide Dict Econ Pl, as D. batatas)
  • Medicines: folklore (fide Herbs Commerce ed2, as D. oppositifolia; CRC MedHerbs ed2)
  • Weed: (fide Rep NCEPPC, as Dioscorea batatas)

Distributional Range:


  • Asia-Temperate

    • China: China - Anhui, - Fujian, - Gansu, - Guangdong, - Guangxi, - Guizhou, - Hebei, - Henan, - Hubei, - Hunan, - Jiangsu, - Jiangxi, - Jilin, - Liaoning, - Shaanxi, - Shandong, - Sichuan, - Yunnan, - Zhejiang
    • Eastern Asia: Japan - Hokkaido, - Honshu, - Kyushu, - Shikoku; Korea; Taiwan

  • Naturalized:

    . natzd. in temperate regions


    . cult. in temperate regions


  • Aldén, B., S. Ryman & M. Hjertson Våra kulturväxters namn - ursprung och användning. Formas, Stockholm (Handbook on Swedish cultivated and utility plants, their names and origin). 2009 (Vara kulturvaxt namn)
  • American Herbal Products Association Herbs of commerce. 1992 (Herbs Commerce)
  • Babil, P. et al. 2013. Intra-specific ploidy variations in cultivated Chinese yam (Dioscorea polystachya Turcz.) Trop. Agric. Developm. 57:101-107.
  • Duke, J. A. et al. CRC Handbook of medicinal herbs. 2002 (CRC MedHerbs ed2)
  • Erhardt, W. et al. Zander: Handwörterbuch der Pflanzennamen, 17. Auflage. 2002 (Zander ed17)
  • FNA Editorial Committee Flora of North America. 1993- (F NAmer)
  • Komarov, V. L. et al., eds. Flora SSSR. 1934-1964 (F USSR)
  • Liberty Hyde Bailey Hortorium Hortus third. 1976 (Hortus 3)
  • Mabberley, D. J. The plant-book: a portable dictionary of the vascular plants, ed. 2. 1997 (Pl Book)
  • Ohwi, J. Flora of Japan (Engl. ed.). 1965 (F JapanOhwi)
  • Porcher, M. H. et al. Searchable World Wide Web Multilingual Multiscript Plant Name Database (MMPND) (on-line resource). (Pl Names)
  • Wiersema, J. H. & B. León World economic plants: a standard reference (on-line edition) [medicinal plants only]. (World Econ Pl Med)
  • Wu Zheng-yi & P. H. Raven et al., eds. Flora of China (English edition). 1994- (F ChinaEng)
  • Yen, Kun-Ying Illustrated Chinese materia medica: crude drugs. 1980 (Ill Chin Mat Med CrD)


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