Tree 24-27(-36) m high; young branches tawny pubescent; buttresses to 1.8 m high. Stipules interpetiolar, c. 2.5 mm long. Leaves 9-13-foliolate; petiole and rachis 17-24 cm long. Leaflets chartaceous, lanceolate, 5-7.5 by 2.5 cm; apex acuminate; base slightly unequally rounded; green and glabrous above, paler and pubescent beneath; nerves 12-16 per side. Inflorescences axillary, at the ends and bases of new leafy shoots, 7.5-15 cm long, the rachis angular, pubescent; bracts and bracteoles minute, the bracteoles often at the middle of the pedicels; pedicels variable in length, 6-15 mm, puberulous. Hypanthium c. 1.5 mm long, puberulous outside. Calyx lobes elliptic or suborbicular, 4-5 by 2-4 mm, puberulous outside, sometimes also on the basal part inside. Stamens 10, rarely 9, alternately shorter and longer. Pistil shortly stipitate; ovary c. 3 mm long, 1 or 2-ovuled; style short, c. 2 mm, glabrous except the basal part; stigma obscure. Pods shortly oblong, c. 3.5 by 6 cm, flat, woody, obliquely rounded at both ends, rugose, densely rusty hairy. Seed often 1.
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