Tree up to 1 high with a large, often rounded, crown; bark dark brown to greyish, rough or sometimes smooth; branchlets puberulous to shortly pubescent when young. Leaves puberulous to shortly pubescent: petiole 0.5-1.3 cm long; rhachis 2-4.5 cm long, with a sessile usually cylindrical gland between each pinna pair; pinnae (2)4-5(7) pairs; rhachillae 1.8-4.5 cm long; leaflets (8)10-19(22) pairs, 4-9.5 x 1-2 mm, ± linear-oblong or oblong, glabrous apart from the marginal cilia or sometimes sparingly pubescent on the lower surface, sometimes spikes 3-10 cm long; inflorescence axes puberulous with small ± appressed hairs or hairs short and spreading. Flowers pale yellowish-white, subsessile. Calyx cupular, up to 1.2 mm long, 5-toothed, puberulous. Petals 5, free, up to 3.2 x 0.9 mm, glabrous or sometimes sparingly pubescent apically. Stamens 10, free,up to 5 mm long; anthers without an apical gland. Ovary up to 1.8 mm long, stipitate, densely pilose. Pods bright red when young, becoming brown with age, 8-20 x 1.3-2 cm, straight or somewhat curved, linear-oblong, flattened, dehiscing along one of the margins, the valves remaining attached along the other. Seeds flattened, oblong, surrounded by a membranous wing, 2.8-4 x 1.2-2 cm.
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