Tree to 8 m; bole to 24 cm diam. Bark dark brown, darker within; inner bark reddish. Leafy twigs to 3 mm diam. Leaves to 75 cm long; petiole 5–15 cm long, 2.5 mm diam., terete. Leaflets in up to 13 pairs, 4.5–30 by 2.7–9 cm, obovate or elliptic to oblong, the proximal often conspicuously smaller than the distal, fulvous pubescent abaxially and on major venation adaxially, bases acute to cuneate; apices ± acuminate, costae c. 7–15 on each side, venation weakly prominent abaxially; petiolules to 6.5 mm, pubescent. Inflorescence to 18 cm, weakly scented, paniculiform, borne in leafy axils, though subtending leaf sometimes unexpanded, velutinous; axis unbranched (? female) or with branches to 2.5 cm (male); bracts to 3 mm long, subulate. Calyx 3–4 mm long, cupulate, pubescent without, margin truncate. Petals (3 or) 4, c. 7 by 2 mm, creamy white, pubescent without. Staminal tube weakly adnate to corolla, c. 6 mm long, sericeous without though sometimes glabrous at base, glabrous within though sometimes with a few hairs at base, margin ± entire; anthers (5) 6, c. 1.5 mm long, locellate, inserted c. 3 mm within tube, connective glabrous to sparsely hairy. Ovary 4-locular; style to 6 mm long, glabrous or with hairs in proximal half. Mature female flowers, fruits and seeds unknown.