- yam bean, potato bean, Pachyrhizus tuberosus - twining plant of Amazon basin having large edible roots
--1 is a kind of vine
--1 is a member of Pachyrhizus, genus Pachyrhizus - groundnut, groundnut vine, Indian potato, potato bean, wild bean, Apios americana, Apios tuberosa - a North American vine with fragrant blossoms and edible tubers; important food crop of Native Americans
--2 is a kind of vine
--2 is a member of Apios, genus Apios
--2 has parts: groundnut, potato bean, wild bean - groundnut, potato bean, wild bean - nutlike tuber; important food of Native Americans
--3 is a kind of tuber
--3 is a part ofgroundnut, groundnut vine, Indian potato, potato bean, wild bean, Apios americana, Apios tuberosa