Woody climbers. Branchlets subglabrous. Petiole 9-13 cm, puberulent; stipels subulate, ca. 1.5 mm; petiolules 5-6 mm, thick, puberulent; leaflets leathery, slightly puberulent abaxially, glabrous adaxially, lateral veins 7-9 pairs, usually not branched, tertiary veins transverse, quaternary veins slender, reticulate; terminal leaflet obovate or broadly elliptic, 14-17 × 9.5-12 cm, rounded at both ends or slightly narrowed at base; lateral leaflets asymmetric, broadly ovate, 12-16 × 6.5-10 cm, base rounded, apex obtuse. Inflorescence 30-40 cm; rachis puberulent. Calyx 3-4 mm, puberulent. Corolla white or pinkish white; standard broadly ovate, 5-6 × 5.5-8 mm, apex emarginate, base truncate, claw 2-3 mm; wings 5-7.5 mm, auriculate, claw 3-4 mm; keel 4-5 mm. Ovary tomentose. Legumes falcate-oblong, 12-14 cm, thick, subwoody, apex rounded, densely brownish velutinous; stipe terete, 1.3-1.7 cm, densely velutinous. Seeds orbicular or reniform; testa brownish red. Fr. Feb-Mar.
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A large creeper or a tree. It can grow 18 m tall. The flowers are 18 mm long. The pods are hairy.
Sunny places iin mixed deciduous and dry evergreen forests on slopes and along riverbanks, also in forest clearings, secondary forest and thickets. It is found on sandy, laterite and clay soils and on limestone; at elevations from 200-2,000 metres.
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It is a subtropical plant. In Nepal it grows between 200-2,000 m above sea level.