Tree, 3-30 m high, dbh 5 cm to 1 m; outer bark smooth to somewhat finely fissured, usually hard, usually whitish to (dark) grey with dark patches, also (red-)brown, inner bark yellow to red to brown, (fibrous); cambium white to yellow (to red); sap-wood white with growth rings to brown; heartwood pinkish brown. Branchlets usually glabrous, at most shortly sericeous when young, hairs brownish; flowering twigs 1-7.5 mm thick. Leaves 1-4-ju-gate; rachis 0.8-16.8 cm long, usually flattened above, wing up to 2 mm broad, rachis at most puberulous, petiole 0.7-11 cm long. Leaflets subses-sile, opposite to subopposite (to alternate), elliptic, 2.1-20 by 1.1-8.4 cm, index 1.2-4, usually symmetrical, subcoriaceous to very coriaceous, punctate; base sharply attenuate; margin entire, flat (to revolute); apex abruptly (acuminate to) cuspidate, very apex obtuse (to acute), not mucronulate; upper surface glabrous to slightly sericeous; lower surface duller, smooth (to slightly papillate), glabrous (to sparsely sericeous especially on the midrib), domatia absent or a single small sac on basiscopic side in axil of second or third nerve (see note 3); venation on upper surface (slightly sunken to) flat to raised, concolorous with lamina, below raised; nerves 0.3-4.2 cm apart, marginally looped and joined, (less so in lower third of leaflets); veins laxly reticulate, rather indistinct. Inflorescences axillary (to pseudoterminal), (un-branched to) branching basally to especially along the terete to flattened, glabrous to pilose, 0.7-16.5 cm long axis; first order branches up to 7.4 cm long; cymules cincinnate, l-3(-6)-flowered; bracts and bracteoles deltate to triangular, outside sericeous, inside (sub)glabrous; bracts 0.5-1.9 mm long; bracteoles 0.2-1 mm long; pedicels 2.2-10 mm long, sericeous, (less so above articulation). Flowers 3.5-4.2 mm in diam. Sepals 5, ovate, margin pilose, with glands, outside and inside (sub)glabrous, green; 2 outer smaller ones 1-2.8 by 1-2.3 mm; 3 inner larger ones 1.4-3.4 by 1.2-3.8 mm, margin petaloid. Petals 5, obovate, 1.8-3.8 by 0.7-1.7 mm, white to yellow, blade obovate, gradually decurrent into the 0.4-1.2 mm high claw, margin pilose, outside and inside (sub)glabrous, apex emarginate to acute; scales (0.8-)1.2-2 mm long, free, basally without auricles, membranous margin indistinct, apex not to hardly broadened; crest a pilose flat part of the bifid scale apex. Disc interrupted. Stamens 8; filaments 1.6-5 mm long, pilose, especially basally; anthers 0.2-0.4 mm long, glabrous. Pistil: ovary 0.3-1.8 mm high, sparsely hirsute; style and stigma 0.2-2.5 mm long. Fruits with 1-3 well developed lobes, 1.2-2.3 by 1.3-2.6 cm, smooth to somewhat ribbed or rugose-ruminate, glabrous, blackish when dry; stipe 2-5 mm high, rather slender; margin blunt; lobes 8.5-14 by 8-16 mm; wall less than 2 mm thick; septa complete. Seeds (globose to) obovoid, 8-9.8 by 7-7.8 mm; hilum 1.1-2 mm long; arillode with pseudo-funicle.
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