(Shrub to) tree up to 25 m high, dbh 20-30 cm. Twigs 3.5-7.5 mm in diam., smooth, light to dark brown, often dark yellow laxly tomentose. Leaves 2-4-jugate, the axes usually tomentose; petiole 1.6-11 cm by 1.5-3 mm; petiolules l-18(-25) by 1-2.5 mm. Leaflets elliptic, 5-34 by 2-14.5 cm, index 2-3.7, thick papery; base symmetrical or nearly so, acute to rounded and attenuate; margin dentate; apex acuminate to caudate, in the terminal leaflet often rounded; midrib and nerves prominent to flat above, veins and veinlets variably reticulate (to laxly scalariform). Inflorescences axillary to terminal, usually a stout branched axis (to clustered), 8-28 cm long, densely hairy. Flowers strongly scented. Sepals 5(-7), usually slightly connate at base, equal (or unequal), narrowly triangular, linear, or broadly ovate to elliptic, acute to rounded, 1.2-2 by 0.5-1.8 mm. Petals variable, 1.2-2 by 0.8-1.7 mm, outside laxly woolly (to glabrous); scale emarginate to divided into 2 lobes, 1.5-2.5 by 1-2 mm. Disc up to 0.7 mm high and 2-3 mm in diam., (erect rim absent). Stamens 7 or 8; filaments up to 4.2 mm long. Pistil with (1) 2 or 3 locules. Fruits 2.5-4 by 3-4.3 cm, dull brown to brownish black, densely to laxly variably spiny, glabrous to minutely hairy.
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A tree. It grows up to 25 m high. The trunk is 20-30 cm across.
In different kinds of forests, often along rivers, sometimes on gentle slopes; growing on clay or sand; at elevations from 100-500 metres.
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A tropical plant. It grows in forests and often along rivers. It grows between 100-500 m altitude.
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