Dioscoreaceae is a family of monocotyledonous flowering plants, with about 715 known species in nine genera. The best-known member of the family is the yam.
Dioscoreaceae
Yam is the common name for some plant species in the genus Dioscorea that form edible tubers.
Yams species called Parkistan. The size is for eating but smaller sizes can be cultivated
White yams at a retail market in Brixton, England, 2004
Freshly harvested purple yam (D. alata) sliced for cross-section
Purple yam (D. alata)