Tree 15-28 m by 30-50 cm; tips of the slender branchlets rusty-tomentose, very soon glabrescent, finally glabrous. Leaves ± narrow-oblong or oblanceolate or obovate-oblong, it abruptly acuminate at the apex, subacute or obtuse, cuneate into the petiole and somewhat decurrent, chartaceous to subcoriaceous, rarely coriaceous, yellow-greenish when dry, rusty-tomentose on both faces and on the petiole when very young, but soon glabrescent, entirely glabrous at maturity and mostly shining above, less so beneath, entire or mostly with some ± coarse ± obtuse teeth on both sides in the upper part, (8-) 10-15(-24) by (3-)3½-5(-8) cm; midrib slightly raised above, distinctly so beneath, nerves (6-)7-8(-10) pairs, rather straight in their lower part, curved upwards, ± joined along the edge, somewhat prominent on both faces, reticulations dense, slightly but well visibly raised on both faces; petiole 0.6-1(-1.5) cm. Racemes from the upper axils, sometimes sub-terminal, solitary or 2-3 together, rather slender, dense-flowered nearly to their base, mostly ± densely rusty-tomentose all over, rarely +-glabrescent, never entirely glabrous, (5-)7-12(-15) cm; rhachis 1-1.5 mm diam. Bracts ovate-lanceolate, rather thin, 2-3 mm, often equalling the pedicels. Bracteoles minute, usually rather long persistent as are the bracts. Pedicels rather slender, 2-3(-4) mm in anthesis, mostly in twos, free or halfway connate. Perianth yellowish-green, fragrant, slender, rusty-tomentose or at least ± densely pilose, rarely with only some scattered rufescent hairs, (6-)7-8 mm, tube 0.5 mm diam., limb 1 mm diam. Anthers c. 1.5 mm. Disk glands free, nearly rounded. Ovary ferrugineous-villous; style slender, glabrous. Fruit ellipsoid or obliquely ovoid, obtuse, smooth, glabrous, bluish-nigrescent, 1-1.2 (-1.5) by 4/5-1.2 cm; pericarp 4/5-1 mm; pedicel 7-8 mm.
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A shrub or small tree. It grows 6-20 m tall. The trunk can be 25 cm across. The bark is dark grey. The leaves are alternate and simple. The flowering stalks bear up to 3 reddish brown flowers. The fruit are bluish black. It is 3 cm long.
A sub-canopy tree in undisturbed mixed dipterocarp, swamp, sub-montane and montane forests, growing on ridges, but also common on alluvial sites and along rivers and streams; at elevations up to 2,200 metres.
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In rain-forest, on tops of low hills, jungle ridges, often along streams, scattered, from low altitudes up to 1000 m, rarely up to 1500 m. Fl Jan.-May, fr. Apr.-June.
A tropical plant. It grows in dense forests on plains up to 1500 m altitude.