A Central American climbing plant of the pea family, which has been cultivated for its edible tubers (jicama) since pre-Columbian times.
- Pachyrhizus erosus, family Leguminosae.
- It looks like the bastard child of a potato and a coconut, and it's also called a yam bean or a Mexican turnip.
- Like the potato, the yam bean is a tuber - a fleshy subterranean stem.
- Supercrop: the yam bean, a tuber undaunted by drought, poor soil, or insects, produces astonishing yields.
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