Liana, high climbing shrub, or small tree. Leaves: petiole and main rachis 12-20 (-26) cm long, pubescent, glabrescent; pinnae 7-17 pairs, pubescent. Inflorescences 10-35 cm long, rachis and branchlets pubescent, densely flowered; pedicels 3-8 mm, sparsely puberulous. Petals: standard oblong-elliptic, c. 4 by 2 mm, glabrous outside, densely puberulous on the lower half inside and on the margins; the others oblanceolate, 3-4 by 1-1.5 mm, glabrous except puberulous on the lower 1 mm inside and on the margins. Stamens: 7-8 mm; filaments hairy at the lower 2 mm; anthers oblong, c. 1 mm long. Ovary puberulous or only on the convex side, 2-ovuled; style 6-7 mm. Seeds 6.5 by 5.5 mm.
Asia-Tropical: Cambodia (Cambodia present); Jawa (Jawa present); Laos (Laos present); Lesser Sunda Is. (Bali present); Sumatera (Sumatera present); Vietnam (Vietnam present), Malay Peninsula (Selangor) incl. Langkawi I present, Peninsula present, Sumbawa present, Tenasserim present
Burma (Tenasserim), Thailand (Peninsula), Cambodia, Laos, Vietnam; Malesia: Sumatra, Malay Peninsula (Selangor) incl. Langkawi I., Java, Lesser Sunda Islands (Bali, Sumbawa).