Tree up to 12 m high, dbh 10-40(-60) cm, sometimes a shrub. Twigs 10-15 mm in diam., light to dark brown, tomentose, glabrescent. Leaves 3-5-jugate, glabrous (or rachis beneath sparsely hairy); petiole 11.5-20 cm by 3-6 mm; petiolules 5-17(-27) by 1.5-4 mm. Leaflets elliptic, 6-32 by 3-13 cm, index 1.3-3.3, thick pergamentaceous; base symmetrical to asymmetrical, cuneate in especially the terminal leaflet to rounded (to slightly attenuate); margin dentate; apex emarginate to rounded (or ± abruptly short-acuminate), mucronulate or not; midrib and nerves deeply sunken above, the former invisible; venation lax, reticulate to scalariform, ± inconspicuous. Inflorescences axillary (to terminal), stout, often single, 25-60 cm long, tomentose. Flowers fragrant. Sepals 5, slightly connate at base, all equal, deltoid to broadly ovate, acute, 1-2.1 by 1.2-2.3 mm, reddish. Petals obtri-angular to suborbicular, 1-2 by 0.8-1.8 mm, pink to white, outside glabrous; scale emarginate to lobed, 1-2 by 1.5-3.3 mm, yellow-hairy. Disc up to 1 mm high, 2-3 mm in diam. Stamens 7 or 8; filaments up to 3.5 mm long. Pistil with 3 (or 4) locules. Fruits 2-3 by 2.5-3.7 cm; greyish brown to red, densely spiny, glabrous.
Open, secondary forest and evergreen scrub, along rivers, in plains, more rarely on rocks or hills; growing on a rich soil, often on limestone; at elevations from sea level up to 300 metres.
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