Tree to 28 m and bole to 50 cm diam., buttressed. Leafy twigs 5–7 mm diam., somewhat striate; buds with fist-shaped young leaves, sericeous. Leaves 20–40 cm, 5–7-jugate with terminal scar, stump or very narrow leaflet to 2.5 cm long, glabrous to finely puberulent, drying yellowish; petiole 10–14 cm, angled, grooved adaxially, weakly swollen basally. Leaflets 9–15 by 3.5–5.5 cm, narrowly oblong to subfalcatc, opposite to subopposite, bases ± markedly asymmetric, obtuse distally, acute proximally, apices acuminate, costae c. 14 on each side, obtuse, conspicuously forked c. 1/3 from margin, prominulous on both surfaces in sicco, secondary veins almost as conspicuous; petiolules c. 3 mm. Thyrse 10–35 cm, narrowly pyramidal, axillary to supra-axillary; axes glabrous or subglabrous; basal branches to 5 cm long, squarrose, bearing secondary branches to 1.5 cm with l–3-flowered cymules; bracts and bracteoles 0.5 mm, lanceolate; pedicels c. 1 mm. Calyx c. 1.5 mm long, c. 2 mm diam., 4-lobed to about half way, adpressed pubescent, margin ciliate, continuous with pseudopedicel 1–2 mm. Petals 4, c. 4.5 mm long, yellowish, narrowly oblong, valvate, adnate to staminal tube in proximal half. Staminal tube glabrous or sparsely hairy without, margin 8-lobed, the lobes irregularly laciniate; anthers 8, c. 0.5 mm long, ovate, glabrous, inserted between lobes and at apices of conspicuous ribs (vascular bundles). Disk c. 1.5–2 mm, pubescent, margin irregularly lobed. Ovary densely hairy, 4-locular, each locule 1-ovulate; style terete, sericeous in proximal 3/4; stylehead shortly subdiscoid. Infructescence branched. Capsule c. 2.5 cm diam., subglobose to top-shaped, glabrous, pale yellow, 4-valved. Seeds 4, c. 1 cm long, plano-convex, with red (?) aril.
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