Small to large-sized tree up to 40 m, 60 cm ø. Buttresses sometimes present, low. Bark smooth or finely fissured, grey-green to dark grey-brown, often hoop-marked and lenticellate. Terminal bud 1-2 by V-i-Vicm; stipules 1½-2 by ¼-1l2cm. Leaves thick-coriaceous, rigid, elliptic-lanceolate to elliptic-oblong, (6½-)10-15(-18) by (2½-)4-6 (-8) cm, broadest at the middle, index 2½-3; except for the midrib and lateral nerves glabrous above, densely set with yellowish-brown, soft, slender hairs beneath; base rounded or attenuate, unequal-sided; margin entire, often recurved; apex rounded to acute; midrib and nerves strongly raised beneath, flattish or impressed above; nerves (12—)14—16(—17) pairs, 5-8 mm spaced, arcuating but not anastomosing near the margin, forming an angle of up to 60° with the midrib; reticulations dense, regularly spaced, scalariform or subscalari-form, strongly raised and prominent beneath, obscure to faintly visible above; petiole 5-10 by 1-2 mm, subterete, densely yellowish-brown ap-pressed, pubescent. Inflorescences ♂ or ♀, axillary, borne on separate shoots, including the bracts densely yellowish-brown, appressed-pubescent; bracts narrow ovate-acute, c. 1-2 by 1 mm. ♂Inflorescence a slender, lax, pendent, branched panicle of condensed cymes, up to 7 cm long, bearing 20-100 flowers; ♂ flowers in clusters of 5-10 along the axes, c. 2 by 2 mm; perianth lobes broad ovate-acute, c. l-l½ by 1 mm, densely, short appressed-hairy outside; filaments 1-1 ½ nim, anthers ovoid, c. 1 mm ø; pistillode strongly rudimentary. ♀ Inflorescence a simple or branched panicle, up to 2½ cm long, 5-10-flowered; ♀ flowers sessile along the axes, compressed ovoid-conical, 2-3 by l½-2 mm; perianth lobes ovate-acute, densely appressed-hairy outside, l½-2 by 1 mm; ovary densely appressed-hairy, l½-3 by l-l½ mm; stigmatic arms 5-10 mm. Infructescence up to 3 cm long, bearing (2-)4-6(-8) fruits. Fruit subglobose or ovoid, densely appressed-pubescent, 5-8 by 4-6 by 3-4 mm, short-beaked.
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A tree. It grows 36 m tall. The leaves are alternate and simple. They are densely hairy. The flowers are 1 mm across. They are white and in groups. The fruit are 6 mm across. They are yellow to red and fleshy.
Primary forest and slightly disturbed sites, in mixed dipterocarp and swamp forests; on alluvial sites and by rivers and streams, also on hillsides and ridges; on ultrabasic to sandy soils, also on clay; up to 700 metres, occ to 1,400 metres .
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In primary and secondary forests, 0-1300 m, mostly below 500 m; often common locally as understorey tree in lowland forests. In Thailand it occurs mainly in the evergreen forest along streams. Fl. fr. Jan.-Dec., but mainly during July-Dec.
It is a tropical plant. It grows in open forests and swamp forests up to 500 m above sea level. It is often along rivers and on very basic and sandy soils but also on clays.
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