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Dioscorea is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending into temperate climates.
Male Dioscorea batatas (D. polystachya) in Hooker's A General System of Botany 1873 . While Lindley did not use the term "Dioscoreales", he placed the family Dioscoraceae together with four other families in what he referred to as an Alliance (the equivalent of the modern Order) called Dictyogens.
The best-known member of the family is the yam (some species of Dioscorea). The APG system (1998) and APG II system (2003) both place it in the order Dioscoreales , in the clade monocots . However, the circumscription changed in the APG II system, with the 2003 system expanded to include the plants that in the 1998 system were treated in the ...
Dioscorea composita, or barbasco, is a species of yam in the family Dioscoreaceae. [ 1 ] [ 2 ] It is native to Mexico . It is notable for its role in the production of diosgenin , which is a precursor for the synthesis of hormones such as progesterone . [ 3 ]
Dioscorea ancachsensis is a herbaceous plant in the genus Dioscorea that is native to Peru. [1] It is uncertain if these specimens are mature, but they are distinct from most specimens of most Dioscorea species in that they are approximately 5 cm across.
Dioscorea communis or Tamus communis is a species of flowering plant in the yam family Dioscoreaceae and is commonly known as black bryony, lady's-seal or black ...
Dioscorea sericea (common names: wild yam, colic-root, rheumatism-root) [2] is a type of climbing tuberous geophyte in the family Dioscoreaceae. [3]
Dioscorea quartiniana is a climbing tuber geophyte in the family Dioscoreaceae. [2] It is native to Benin, Botswana, Burundi, Chad, Congo, Côte d'Ivoire (Ivory Coast