indian potato

(noun) a North American vine with fragrant blossoms and edible tubers; important food crop of Native Americans. Synonyms: groundnut, groundnut vine, Indian potato, potato bean, wild bean, Apios americana, Apios tuberosa.

(noun) very tall American perennial of central and the eastern United States to Canada having edible tuberous roots. Synonyms: giant sunflower, tall sunflower, Indian potato, Helianthus giganteus.