Leaves 6–15 cm long; petioles 10–30 mm long; rachis deeply canaliculate above with raised and winged margins; leaflets glaucous in 3–6 overlapping to widely spaced pairs, broadly oblong or rectangular, 1.5–2 times as long as broad, proximal leaflet pair 2–5 × 1.5–3.5 cm, the rest 3–7 × 2–4 cm, obliquely rounded, obtuse or emarginate at the apex, obliquely cordate at the base, glabrous, midvein central, 3–5 veins from the proximal leaflet base.
Stipules persistent, 10–26 × 1.5–3 mm, shortly connate at the base, erect, linear or falcate; auricles 7–22 × 5–15 mm, reniform to semicircular, palmately nerved, caducous independently of the stipules.
Tree to 15 m tall; bark deeply or shallowly fissured longitudinally, often coarsely reticulate, flaking in thick rectangular scales, dark grey.
Sepals 5, 2–4 × 1–2 mm, oblong, orbicular or oblong-lanceolate, imbricate, densely cilate on the margins.
Flowers up to 3–6 × 3–4 mm; pedicels up to 2.5 mm long; bracteoles 5–8 × 3–4 mm, obovate or orbicular.
Inflorescences in terminal and/or axillary panicles to 10 cm long; bracts 2–3 × 1.5–2 mm, ovate.
Pods dark brown, 9–16 × 3–4.5 cm, oblong to obovate, with suberect ventral flanges.
Ovary 3–5 × 1.5–2.5 mm, densely pubescent, oblong, stipe to 3.5 mm long.
Stamens 10, united to 2 mm at the base filaments 8–12 mm long.
Young branchlets pubescent with brown or cream hairs.
Seeds up to 7, 15–20 × 10–15 mm, oblong or circular.
Petals 0–3, up to 3 × 1.5 mm, filiform or linear.
Dormant axillary buds much flattened.