Dioscorea cayennensis subsp. rotundata, commonly known as the white yam, West African yam, Guinea yam, or white ñame, is a subspecies of yam native to Africa. It is one of the most important cultivated yams. Kokoro is one of its most important cultivars.
It is sometimes treated as separate species from Dioscorea cayennensis.Its wild progenitor is Dioscorea praehensilis.
D. c. subsp. rotundata is grown in West Africa, including countries such as Ivory Coast, Ghana and Nigeria.
Blench (2006) reconstructs ...
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