Tree up to 20(–25) m with a dense feathery crown. Bole up to 2 m in circumference, with buttresses upwards to 75 cm and outwards to 30 cm. Outer bark smooth, reddish-brown or greyish-brown, with shallow longitudinal fissures; inner bark pale brown or reddish-brown; sapwood yellowish-brown; heartwood brown or reddish-brown; latex white. Twigs slender, densely covered with reddish-brown stellate hairs or scales near the apex. Leaves imparipinnate, up to 42 cm long and 22 cm wide; petiole up to 8 cm, petiole, rachis and petiolules densely covered with stellate hairs or scales like those on the twigs. Leaflets (11–)13–17(–27), 5–10.5 by 1.3–2.2 cm, narrowly elliptical, nar-rowly oblong or lanceolate, acuminate-caudate at apex, usually cuneate at the asymmet-rical base but sometimes rounded on one side, with scales or hairs like those on the twigs few or densely covering the midrib on the upper and lower surfaces and absent to numerous on the rest of the leaflet; the upper surface usually shiny and with numerous pits, the lower surface rugulose and often with numerous pits; veins 9–15(–24) on each side of the midrib, reticulation sometimes subprominent or visible on the lower surface; petiolules up to 8 mm. Inflorescence up to 22 cm long and wide, ovate in outline; pe-duncle up to 5 cm long; peduncle, rachis and branches with indumentum like the twigs. Flowers up to 1.5 mm in diam.; pedicels up to 1.5 mm, with indumentum like the twigs. Calyx with few to densely covered with stellate hairs or scales on the outer surface. Petals 5. Staminal tube 2/3 as long to nearly as long as the corolla, subglobose, the aperture 0.3–0.5 mm in diam., with a wavy margin; anthers 5, ellipsoid, about 2/3 as long as the staminal tube, inserted near its base or about half way up and usually just protruding. Infructescence c. 35 cm long and 20 cm wide; peduncle up to 8 cm, pedun-cle, rachis and branches with indumentum like the twigs. Fruits up to 2.5 cm long, sub-globose or broadly ellipsoid, purple, brown, orange or yellow, indehiscent, densely covered with stellate hairs or scales; locules 1 (or 2), each containing one seed: aril translucent, sweet.
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An evergreen tree. The crown is dense and feathery. It grows 20 m tall. The trunk can be 60 cm across. It has buttresses 75 cm high. Plants are separately male and female. The fruit are orange to brown and 2.5 cm long. They contain 2 seeds.
Dense primary forest; the more open, secondary formations; swamps; riverine forests; ridge forests; growing on sands, silty clays and clays; at elevations up to 1,000 metres.
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It is a tropical plant. It grows in dense forests and near swamps and rivers. It grows up to 1,000 m above sea level.