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Dioscorea mexicana

dioscorea mexicana, dioscorea mexicana for sale
Dioscorea mexicana, Mexican yam or cabeza de negro is a species of yam in the genus Dioscorea

Dioscorea mexicana is a caudiciform dioscorea having either a partly to completely above-ground dome-shaped caudex with a thick, woody outer layer up to 3 feet90 cm in diameter and 8-10 inches20 to 25 cm in height The caudex of D mexicana is divided into regular polygonal plates that become protuberant with age, and separated by deep fissures The vigorous annual vines which may reach 30 feet 9 m long before dying back in winter, that grow up from the caudex, bear heart-shaped leaves

Dioscorea mexicana ranges from the state of San Luis Potosí in northeastern Mexico south to Panama It is notable for its production of diosgenin, which is a precursor for the synthesis of hormones such as progesterone Russell Marker developed the extraction and manufacture of hormones from D mexicana at Syntex Later the Mexican barbasco trade focused instead on Dioscorea composita instead, as this variety has a higher diosgenin content


  1. ^ a b "World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew" appskeworg Retrieved 2017-01-23 
  2. ^ Dortort, Fred2011 Succulent Plants of the World Timber Press Inc pp 220 ISBN 978-0-88192-995-9
  3. ^ Téllez V, O & B G Schubert 1994 251 Dioscoreaceae 6: 53–65 In G Davidse, M Sousa Sánchez & AO Chater eds Flora Mesoamericana Universidad Nacional Autónoma de México, México, D F
  4. ^ Sosa, V, B G Schubert & A Gómez Pompa 1987 Dioscoreaceae Flora de Veracruz 53: 1–46
  5. ^ Correa A, MD, C Galdames & M Stapf 2004 Catálogo de las Plantas Vasculares de Panamá 1–599 Smithsonian Tropical Research Institute, Panamá
  6. ^ Pérez J, L A, M Sousa Sánchez, A M Hanan-Alipi, F Chiang Cabrera & P Tenorio L 2005 Vegetación terrestre 65–110 In J Bueno, F Álvarez & S Santiago Biodiversidad del Estado de Tabasco CONABIO-UNAM, México
  7. ^ Balick, M J, M H Nee & DE Atha 2000 Checklist of the vascular plants of Belize Memoirs of The New York Botanical Garden 85: i–ix, 1–246
  8. ^ Nelson Sutherland, CH 2008 Catálogo de las plantes vasculares de Honduras Espermatofitas: 1-1576 SERNA/Guaymuras, Tegucigalpa, Honduras
  9. ^ López Patiño, EJ, Szeszko, DR, Rascala Pérez, J & Beltrán Retis, AS 2012 The flora of the Tenacingo-Malinalco-Zumpahuacán protected natural area, state of Mexico, Mexico Harvard Papers in Botany 17: 65-167
  10. ^ "Dioscorea mexicana" Germplasm Resources Information Network GRIN Agricultural Research Service ARS, United States Department of Agriculture USDA Retrieved 10 January 2018 
  11. ^ americanheritagecom

External links

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Dioscorea mexicana

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