Tree to 10 m, leptocaul, somewhat weeping, ± riparian; bole to 10 cm diam. Bark greyish, smooth to finely fissured, reddish within; inner bark straw, sometimes unpleasantly scented. Leafy twigs to 2 mm diam., thinly hairy when young, becoming glabrous, cicatrose. Leaves to 45 cm, with very small pseudogemmula; petiole 1–8 cm, 1–2 mm diam. Leaflets in up to 9 pairs, (4–)7.5–15.5 by (2–)3.3–6.3 cm, ovate to elliptic, glabrescent, coriaceous, bases acute to cuneate, ± asymmetric, apices acuminate, venation impressed adaxially in vivo, prominent on both sides in sicco, costae 5–10 on each side; petiolules to 10 mm. Inflorescence racemose to thyrsoid, to 60 cm, but usually very much less, unbranched in females, 0–2-branched in males; branches to 3 cm, patent, with scattered flowers, especially distally; bracts c. 1 mm long, subulate; pedicels to 2 mm long. Calyx 1.7–2.5 mm long, margin often with a split to 1 mm. Petals 4, c. 13.5 by 1 mm, though smaller in males, ligulate, white or pinkish green, glabrous or with a few hairs apically, alternative. Staminal tube glabrous, margin weakly lobed; anthers 4–6, c. 0.7 mm long, locellate, inserted c. 1.5 mm within tube, connective glabrous or thinly pubescent. Style pubescent in proximal half; stylehead c. 0.5 mm diam. Capsule to 6.5 cm long, 2.25 cm diam., glabrous, red; valves 3 or 4. Seeds 2–4, to 3 cm long, 1.8 cm wide, 1.1 cm thick, ellipsoid to boatshaped; aril circumhilar, red; testa black; cotyledons superposed.