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Yam is the common name for some plant species in the genus Dioscorea (family Dioscoreaceae) that form edible tubers (some other species in the genus being toxic). Yams are perennial herbaceous vines native to Africa, Asia, and the Americas and cultivated for the consumption of their starchy tubers in many temperate and tropical regions.
Dioscorea alata – also called ube (/ ˈ uː b ɛ,-b eɪ /), ubi, purple yam, or greater yam, among many other names – is a species of yam (a tuber). The tubers are usually a vivid violet - purple to bright lavender in color (hence the common name), but some range in color from cream to plain white.
Dioscorea hastifolia, the Adjigo (ˈadʒɪɡəʊ) yam, also known as the Warram, is a yam with long, white, edible tubers that is native to Southwest Australia.It is a climbing vine with hastate, spearheaded, leaves and bears green triangular fruit.
Dioscorea bulbifera (commonly known as the air potato, air yam, bitter yam, cheeky yam, potato yam, [2] aerial yam, [3] and parsnip yam [4]) is a species of true yam in the yam family, Dioscoreaceae. It is native to Africa, Asia and northern Australia. [ 1 ]
Dioscorea trifida is a species of flowering plant in the family Dioscoreaceae. It is a species of yam (genus Dioscorea). It is native to the Caribbean and Central and South America. [1] Its many common names include Indian yam, [2] cush-cush, and yampee. [1]
Dioscorea esculenta, commonly known as the lesser yam, is a yam species native to Island Southeast Asia and introduced to Near Oceania and East Africa by early Austronesian voyagers. It is grown for their edible tubers , though it has smaller tubers than the more widely-cultivated Dioscorea alata and is usually spiny.
Dioscorea dumetorum, also known as the bitter yam, cluster yam, trifoliate yam, or three-leaved yam, [1] is a species of flowering plant in the yam family, Dioscorea. It is native to sub-Saharan Africa and especially common in the tropical regions of West Africa, including Nigeria, Benin, and Ghana. [2] D. dumetorum has both toxic and non-toxic ...
Dioscorea cayenensis subsp. rotundata, commonly known as the white yam, West African yam, [1] Guinea yam, or white ñame, is a subspecies [2] of yam native to Africa. It is one of the most important cultivated yams. [3] Kokoro is one of its most important cultivars. It is sometimes treated as separate species from Dioscorea cayenensis. [1]