Tree up to c. 10 m. tall, trunk up to 6 dm. diam. (juveniles of densely divaricating form). Branches spreading or drooping, young branchlets clad in pale to fulvellous tomentum. Lvs up to 15 cm. long or more, with 20-40 pairs of lflts. Lflts 5-7 mm. long, rarely up to 1 cm., obovate-oblong, clad above and below in appressed silky hairs, us. becoming glab. on both surfaces when mature, midrib distinct below. Fls up to 4·5 cm. long, in 4-10-fld racemes, pale to golden yellow. Calyx silky-tomentose, 1 cm. or more long; standard up to 3 cm. long, wings = or a little > standard; keel c. 4 cm. long. Pods fulvellous-tomentose when young, broadly winged, up to 15 cm. or more long, 6-or more-seeded. Seeds brownish to golden yellow, 5-8 mm. long.
Lowland and lower montane regions, growing along rivers, forest outskirts, and open places.
Can be grown by cuttings or seedlings. Seeds needs soaking.