Tree 20-22 m tall, 40-45 cm in diam., trunks with stout thorns up to c. 8 cm long; young branches with supra-axillary thorns up to 1 cm long. Leaves 10-24 cm long; shortly petioled, both petiole and rachis sparsely puberulous; petiolules short. Leaflets up to c. 26 per pinna or on a simply pinnate leaf, coriaceous, oblong, rhomboid-oblong, or lanceolate, 2.5-7 by 1-2.5 cm, slightly unequal-sided; apex mucronate or slightly notched; base acute; margin slightly irregularly crenate; glabrous on both surfaces; nerves c. 10 per side. Inflorescences up to c. 9 cm long; pedicels 3-5 mm. Flowers puberulous outside. Hypanthium short, c. 2 mm long. Calyx lobes 5, lanceolate, slightly imbricate, 3-3.5 mm long. Petals 5, white, similar to calyx lobes in shape and size. Stamens 10; filaments subulate, apical part inflexed, pilose except the apical part; anthers versatile, 1.3 mm long, apiculate; reduced to staminodes in female flowers. Ovary covered with appressed hairs, c. 20-ovuled; pistil reduced in male flowers, filiform or obscure. Pods (10-)20-26 by 2-3 cm. Seeds up to c. 20, ellipsoid, compressed, c. 12 by 6 mm.
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