Trees, up to 45 m and 90-120 cm dbh; twigs greyish brown to rusty-brown, young parts brownish hairy. Leaves including petiole (10-)15-24(-28) cm long; petiolules 2-4.5 mm. Leaflets (5 — )7 — 11( — 15) pairs, oblong-elliptic to-lanceolate, (5 — )6 — 8( — 15) by (1.5-)2-4(-7) cm, (sub)coriaceous, hairy, sometimes late glabrescent; apex abruptly to long acuminate, acumen up to 2 cm; base rounded to cuneate; upper surface dark brown when dry, lower surface chocolate brown to rusty brown; nerves 10 — 12( — 15) pairs, distinct on both surfaces, sometimes obscured below by thick, golden hairs. Panicles terminal, the lower branches usually subtended by leaves, rachis 10 — 15( — 30) cm, usually rusty brown; pedicels (2-)2.5-4(-7) mm. Flower buds up to 7.5 mm long, Sepals 5, triangular, to 6 by 4 mm, minutely hairy inside. Stamens 2; filaments 1-2.5 mm long; anthers with both slits drawn towards the abaxial side, forming a V-channel on the abaxial side of the connective, 3 — 4( — 5) mm long, hairy. Ovary 2-3.5 mm long; style sharply recurved at top, up to c. 3 mm long, usually sparsely hairy on lower half. Fruits sub-globose to obovoid, sometimes slightly compressed, (1.5-)2-2.5(-3) cm long, sometimes up to 2 mm stipitate; pericarp firm, exocarp densely brown velvety, persistent. Seeds l(-2), roundish to reniform, 3-13 by 9 mm, testa light brown to blackish, shiny.
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A tree. It grows to 45 m high. The trunk does not have branches for 21 m. The leaves are compound. They have 5-11 leaflets. These are oblong and 6-8 cm long by 2-4 cm wide. They are shiny and dark green. There are golden hairs underneath. Leaves are thinly leathery. The leaves end with an abrupt tip. The base is rounded or tapering. There are 10-12 pairs of secondary veins. The flowers are densely hairy. The fruit is an oval pod. It is 2-2.5 cm long. The wall is hard. It is covered with dense brown hairs. The seed is round but unequal. It is about 1.5 mm long.
A canopy tree of mainly primary forest, usually in low-lying areas and hills, at elevations up to about 500 metres. It is also found in freshwater swamp forest.
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A tropical plant. It grows in lowland rainforest and freshwater swamps. It can be found up to 500 m altitude in Kalimantan. It can be on sandy or clay soils.
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