Botanical name: Calopogonium mucunoides Family: Fabaceae (Pea family)
Synonyms: Calopogonium brachycarpum, Calopogonium orthocarpum, Stenolobium brachycarpum
Calopo is a slender creeping and climbing herbaceous vine, coarsely brown-tawny pubescent. It is native to tropical America, but naturalized in NE India. Leaves are compound, with 3 leaflets. Leaflets are ovate, pointed, densely velvety, mostly about 3-6 cm long and more than half as wide. Flowers are medium to pale blue or slightly purplish, typically the shape of a pea-flower. Pods are coarsely pubescent, 2-3 cm long, compressed-convex, slightly constricted between the seeds, seeds 5-7. It is a weed which spreads rapidly and smothers other vegetation around it. Found flowering: November.
Identification credit: Prashant Awale
The flower labeled Calopo is ...