Leaves 5–13 cm long; petioles 2–8(10) mm long; rachis deeply canaliculate above with raised and winged margins; leaflets in 6–10 contiguous pairs, the middle pairs the largest, the proximal pairs 1.5–2.5 × 0.5–1 cm, the middle ones 2.5–6 × 0.8–1.8 cm, the distal ones 2–6 × 0.8–1.2 cm, oblong or lanceolate, acute, rounded, retuse or emarginate at the apex, obliquely rounded at the base, midvein central or subcentral, 2–3(4) veins from the proximal leaflet base.
Sepals 5, 1.5–3 × 1–2.5 mm, linear, obong, rhombic or lanceolate, imbricate or valvate, ciliate on the margins.
Pods 5–12 × 2–3.5 cm, oblong or obovate, ventral flanges spreading, revolute or suberect, up to 4 mm wide.
Inflorescences in terminal and/or axillary panicles up to 8 cm long; bracts 2–3 × 1.5–2 mm, ovate.
Stipules caducous, free, erect, 2.5–15 × 3–5 mm, subulate; auricles absent.
Flowers up to 3–5 × 2–3 mm; bracteoles 4–7 × 3–4 mm, obovate or circular.
Tree up to 20 m tall; bark shallowly fissured or coarsely reticulate.
Ovary 2–3 × 1–2 mm, densely pubescent, oblong, stipe up to 2 mm long.
Stamens 10, united to 0.5 mm at the base, filaments 6–10 mm long.
Seeds up to 6, up to 20 × 15 mm, circular to oblong.
Dormant axillary buds globose.
Young branchlets pubescent.
Petals absent.