Distribution and habitat: Assam, Myanmar, Malaya and East- Indies

Botany: A large climbing shrub with purplish brown stem having scattered, circular to elliptic lenticels and black, closely warted branchlets.

• Leaves: Alternate, graying- green, imparippinnate. Leaflets are oblong, oblong-lanceolate to oblanceolate, slightly hairy to glabrous on upper surface, rusty tomentose on the lower surface.
• Flowers: Papilionaceous and occur in axillary compound racemes.
• Fruit: Pods flattened, elliptic, 5-7.5 cm x 1.8 cm, 1- 3 seeded, thin sutures raised, nearly winged along the sutures.                                                                             

Properties: cytotoxic, Insecticide

Chemical constituents: rotenone, toxicarol, elliptone, sumatrol, tephrosin, and deguelin in roots. 6,4'-dihydroxy-7,5' -dimethoxy-coumaronochromone in the aerial parts.

Uses: Insecticide and fish poison.

Propagation: seeds and stem cuttings.