Small to large tree, up to 25(-40) m high. Young twigs puberulent to tomentose, rarely glabrous, older stems glabrescent. Leaves imparipinnate with (0-)1-8 pairs of lateral leaflets; total length 5.5-15.5 cm including petiole of 1-3 cm; rachis segments 1-2.5 cm long; petiole and rachis segments terete, indumentum varying from glabrous to tomentose-velutinous; leaflets chartaceous to subcoriaceous, glabrous, sometimes ± shiny above; lateral leaflets ± sessile, usually broader towards the base, varying from lanceolate to narrowly elliptic to narrowly ovate to ovate, the largest per leaf (2.2-)4.2-8.5(-12) by (0.8-)1.2-3.5(-4.5) cm, base frequently somewhat to markedly unequal, rounded to cuneate on either side, apex acute to acuminate; terminal leaflets narrowly elliptic to narrowly ovate, 2.5-10 by 1-3.3 cm including petiolule of 0.3-1.5 cm, ± equal in size to largest lateral leaflets or larger, base attenuate into petiolule, apex acuminate; margin crenate, 8-14 notches on each side in the lateral leaflets, crenations rounded or triangular; midrib prominent and shortly hirsute beneath, indented above and sometimes hirsute towards base; secondary and tertiary veins ± flat above and minutely prominent beneath, sometimes drying paler than intervenium. Stipules ± orbicular, subreniform or broadly spathulate, 0.8 by 0.8 to 1.5 by 1.8 cm. Inflorescence 1-3 opposite pairs of lateral dyads or tetrads; peduncles 0.3-1.8 cm long; racemes 7.5-15 cm long; peduncles and axes of racemes minutely puberulent to tomentose. Flowers unisexual or hermaphrodite; pedicel (1.1-)1.5-3 mm long, minutely hairy; calyx lobes 0.6-0.9 mm long, hir-sute at base; petals oblong to obovate, 1.1-1.8 by 0.7-1.2 mm, apex rounded or rarely emarginate; disc lobes free and oblong, 0.2-0.5 mm long, or rarely forming an almost complete ring; in male flowers: filaments c. 2.9 mm long, anthers c. 0.5 mm long, ovary c. 0.5 mm, densely pubescent, styles 0.1 mm, incurved; in female flowers: filaments 0.6-1.2 mm long, anthers 0.3 mm long, ovary 0.6-1.2 mm long, densely pubescent, styles 1-1.3 mm long, straight; in bisexual flowers: filaments 3-3.5 mm long, ovary 0.6-0.8 mm long, pubescent, styles 1.5-2 mm long. Capsules with valves 2.5-4(-6) by 1.5-2(-3.1) mm at dehiscence; exocarp pubescent; calyx lobes usually persistent. Seeds 0.8-1.1 mm long, comose at both ends, hairs up to 2 mm long.
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A tree which loses its leaves. It grows 11 m tall. The trunk can be 60-120 cm wide. The leaves are opposite or in rings. The leaves have leaflets along the stalk. The leafy growth at the base of the leaf stalk is kidney shaped and remains on the shoots. It is 2 cm long by 2.5 cm wide. There are 5-7 leaflets which are long and narrow and 7-12 cm long by 2-3 cm wide. They are unequal at the base. There can be rounded or sharp teeth along the edge. The flowers occur along a stalk 12 cm long. They are usually in pairs at the ends of small branches. The flowers are small. Male and female flowers are separate. The fruit is softly hairy. It is an oval capsule. It is 6-7 mm long and contains 6-8 seeds. The seed are 3 mm long.
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