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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.
Amorphophallus paeoniifolius, the elephant foot yam [4] or whitespot giant arum, [5] [6] is a tropical plant native to Island Southeast Asia. It is cultivated for its edible tubers in Southeast Asia, South Asia, Madagascar, New Guinea, and the Pacific islands.
In Japan, both sweet potatoes (called satsuma-imo) and true purple yams (called daijo or beni-imo) are grown. Boiling, roasting and steaming are the most common cooking methods. Also, the use in vegetable tempura is common. Daigaku-imo (ja:大学芋) is a baked and caramel-syruped sweet potato dessert.
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 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 ]
Yam (vegetable), common name for members of Dioscorea; Taro, known in Malaysia and Singapore as yam; Sweet potato, specifically its orange-fleshed cultivars, often referred to as yams in North America; Yam, a salad in Thai cuisine; Oxalis tuberosa, referred to as yams in New Zealand and Polynesia
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Cassava, yams (Dioscorea spp.), and sweet potatoes (Ipomoea batatas) are important sources of food in the tropics. The cassava plant gives the third-highest yield of carbohydrates per cultivated area among crop plants, after sugarcane and sugar beets . [ 68 ]