jicama

Pachyrhizus erosus, commonly known as jicama ( or ; Spanish jícama [ˈxikama] ; from Nahuatl xīcamatl, [ʃiːˈkamatɬ]), Mexican yam bean, or Mexican turnip, is the name of a native Mexican vine, although the name most commonly refers to the plant's edible tuberous root. Jícama is a species in the genus Pachyrhizus in the bean family (Fabaceae). Plants in this genus are commonly referred to as yam bean, although the term "yam bean" can be another name for jícama. The other major species of yam beans are also indigenous within the Americas. Pachyrhizus tuberosus and Pachyrhizus ahipa are the other two cultivated species. The naming of this group of edible plants seems confused, with much overlap of similar or the same common names.
Flowers, either blue or white, and pods similar to lima beans, are produced on fully developed plants. Several species of jicama occur, but the one found in many markets is P. erosus. The two cultivated forms of P. erosus are jicama de agua and jicama de leche, both named for the consistency of their juice. The leche form has an elongated root and milky juice, while the agua form has a top-shaped to oblate root and a more watery, translucent juice, and is the preferred form for market.

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