Cocoyam is a common name for more than one tropical root crop and vegetable crop belonging to the Arum family (also known as Aroids and by the family name Araceae) and may refer to:
- Taro (Colocasia esculenta) – old cocoyam
- Malanga (Xanthosoma spp.) – new cocoyam
Cocoyams are herbaceous perennial plants belonging to the family Araceae and are grown primarily for their edible roots, although all parts of the plant are edible. Cocoyams that are cultivated as food crops belong to either the genus Colocasia or the genus Xanthosoma and are generally composed of a large spherical corm (swollen underground storage stem), from which a few large leaves emerge.
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