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Edible Portion: Tubers, Vegetable, Root

A yam vine. The stem is square in cross section and does not have spines. The leaves are 25 cm long. They are opposite. The leaf is divided like fingers on a hand into 3 or more segments. The male flower is on a long stalk and the female flower stalk is short. It easily produces seed. The underground tuber is irregular in shape. It can be 70 cm long. Varieties can range in colour from white to purple and black.