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Fabaceae-Faboideae  family

Pachyrhizus erosus (Linnaeus) Urban, Symb. Antill. 4(2): 311.  1905.
Bas.: Dolichos erosus Linnaeus (1753). 

Yam bean
Indigenous rare vine of wet semi-open spots in river valleys at lower elevations.
Native to Mesoamerica.
Although the root tuber is edible, this does not appear to be known locally?
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