- Types:
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Dioscorea alata, water yam, white yam
grown in Australasia and Polynesia for its large root with fine edible white flesh
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Chinese yam, Dioscorea batata, cinnamon vine
hardy Chinese vine naturalized in United States and cultivated as an ornamental climber for its glossy heart-shaped cinnamon-scented leaves and in the tropics for its edible tubers
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Dioscorea bulbifera, air potato
yam of tropical Africa and Asia cultivated for it large tubers
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Dioscorea trifida, cush-cush
tropical American yam with small yellow edible tubers
