Shrub or small tree, to 20 (rarely 35) m tall, deciduous or partly deciduous, glabrous; bark narrowly fissured with small scales, dark greyish-brown; young shoots with interpetiolar scar interrupted. Leaves with petiole 3-7 mm, 2-9 by 1-4½ cm, elliptic to oblong, apex shortly acuminate to rounded, base cuneate to subattenuate, chartaceous, not glaucous beneath. Inflorescence of 1-4-flowered cymules in lower (or sometimes also upper) axils of current shoots or, if shoot fails to develop, apparently axillary on older stems; pedicels 2-6(-8) mm. Flowers heterodistylous. Sepals 2½-5 by 1-3 mm. Petals white or pink, 6-12 by 2-5 mm; nectary scale 2-3 mm, truncate, undulate-denticulate. Stamen fascicles (5?-)7-9 mm, with stamens relatively lax, nearly always <20 per fascicle; anther gland present. Staminodial fascicles trigonous (?), linguiform, attenuate, not cucullate. Ovary 2-3 mm long; styles 1-5 mm. Capsule (6-)9-15 by 3-4(-5½) mm, c. 2½ times as long as sepals, fusiform, with columella ±2/5 as long as capsule. Seeds 5-6 per loculus, 6-6½ by 1½-2 mm, oblong to oblanceolate-oblong.
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A small tree. It grows 5 m tall. The leaves are light green. There are 2-4 flowers in a group. They are yellow.
Lowland forest and on limestone hills, at elevations from 300-800 metres, occasionally descending to 60 metres.
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In lowland forest and on limestone hills, (60-)300-800 m. Fl. March-May (Malaya), Oct. (Sarawak).
It is a tropical plant. It grows at the foot of mountains.