Tree, up to 16.5 m high. Branchlets rough, greyish black; flowering twigs 4-7 mm thick. Leaves 2-4-jugate; petiole 2-6 cm long; rachis 2-8.5 cm long; petiole and rachis terete to flattened above, ribbed, glabrous; petiolules 5-10 mm long, flattened to grooved towards the pulvinus, glabrous, pulvinus 3-5 mm long, grooved, glabrous. Leaflets opposite to subopposite, usually elliptic, sometimes obovate or ovate, 8-14 by 2.5-5 cm, index 2.3-3.6, coriaceous, both sides glabrous; base symmetric, not abruptly narrowing, acute to attenuate; margin not to slightly recurved; apex acute to acuminate, then slightly abruptly narrowing; midrib prominent, smooth to angular, very laxly puberulous, lateral nerves 0.5-1.8 cm apart, basally indistinctly, apically distinctly looped, intercalated veins curved towards the base, veins densely reticulate, on upper surface slightly raised. Inflorescences axillary or subterminal, thyrsoid, branching at the base, to 9 cm long, very laxly puberulous, copiously flowered; cymules 1-or 2-flowered; bracts and bracteoles c. 1 mm long; pedicels c. 2 mm long. Flowers c. 4 mm in diam. Sepals: both sides glabrous, margin very laxly ciliate, outer ones broadly ovate, 1.5-1.7 by 1.8-2 mm, inner ones orbicular, 2.2-2.5 by 2 mm. Petals broadly obovate, 1.8-2 by 2-2.4 mm, both sides pilose towards the base; claw 0.5-0.6 mm high, inside glabrous, outside densely pilose; margins coarsely lobed, thickened towards the base, sometimes slightly recurved towards the base, glabrous; apex rounded; scales absent. Disc glabrous. Stamens 8; filaments 2.2-2.5 mm long, velutinous; anthers c. 0.5 mm long, glabrous to very laxly puberulous. Pistillode sericeous. Fruits not observed.
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