Kosterm.Synonym: P. bigeminatum auct. non-(L.) Mart. ex Benth.; P. gracile Bedd.
Habitat: Eastern Himalayas, Khasi, Jaintia and Lushai Hills.
Siddha/Tamil: Kalpakku.Folk: Kachloraa.Action: Leaf—used externally as a mostrum for leprosy; also applied for promoting growth of hair. Seed—hypoglycaemic. Aerial parts—diuretic, spasmolytic.
The seeds contain 18.3% protein; major amino acids are aspartic acid 13.2, glutamic acid 10.9, alanine 9.7, leucine 8.3, glycine 8.2, serine 7.4%. Seeds contain a poisonous principle pithecolobine. They are used after repeated boiling and discarding of water.