A tree 5-20 m tall; crown feathery, branches ascending and umbrella-shaped; bark light grey to brown, slightly fissured; branchlets, petioles and buds golden-brown silky. Leaves imparipinnate, petiole and rachis 9-20 cm long; petiolule 1-2 mm long; leaflets 19-43, elliptical-oblong, 1.5-3.2 x 0.8-1.2 cm, rounded-emarginate at both ends, both surfaces thinly appressed brown hairy, glaucous below. Inflorescence an axillary raceme, 2-13 cm long, 1-3 together; flowers 7-8 mm long; pedicel 5-15 mm long; calyx campanulate; corolla dark-red to violet; standard 9 mm x 7 mm, bearing 2 glands at the base; stamens 10, monadelphous, 1 stamen free at the top and bottom adnate to stamen tube in center. Pod flat, elliptical to linear-lanceolate, 2.5-7 cm x 1.2-1.7 cm, 1-2(-5) seeded, indehiscent, narrowed at both ends, glabrous to puberulous, leaf-like along dorsal suture with a 1-2 mm wide wing. Seed 6 mm x 3 mm, brown-green. |