bengal bean

(noun) the annual woody vine of Asia having long clusters of purplish flowers and densely hairy pods; cultivated in southern United States for green manure and grazing. Synonyms: cowage, velvet bean, Bengal bean, Benghal bean, Florida bean, Mucuna pruriens utilis, Mucuna deeringiana, Mucuna aterrima, Stizolobium deeringiana.