Small to moderate-sized tree 6-30 m by 14-50 cm; wood hard, yellowish, fine-grained; bark exuding a yellowish, later turning reddish, gummy juice. Innovations hairy. Leaves oblong with cu-neate base, apex acuminate, glandular-thickened, often +-spathulate; petiole 4-7 mm, stout, sulcate; blade 8-18 by 3-6 cm; upper side often with a metallic hue s.s.; lower side whitish by a very thin arachnoid appressed indumentum consisting of twisted hairs, interspersed with sclerenchymatic longer hairs; margin with minute impressed glands; side-nerves ca 5-6, reticulations prominent on both sides. Panicle leafy, 20-40 cm, lower bracts leafy, upper ones linear acute. Flowers white, fragrant; anthers pale yellow. Buds whitish s.s. Sepals ca 2½ by 1½ mm, ovate, acute, hairy. Saccate petal-base ca 2 mm, sometimes compressed, reflexed part ca 2 by 2½ mm; base thickened; laterals unguiculate-spathulate, ca 3½-4by 1½ mm; anteriors 4-5 mm long, oblique-oblong. Staminal tube 1 mm high, filaments over ¼ mm free; anthers ca ½ mm. Gland ca ¾ mm diam. Style 1½ mm glabrous. Ovary ½ mm high. Samaras pale or yellow green, connate over 1½-2½ cm, with straight inner side 2¼-3½ cm long and rounded or lozenge-shaped outer side, 1-1¾ cm broad. Seed not seen.
A tree of the upper canopy, scattered in a wide range of lowland to submontane, evergreen forest types like peat-swamp, freshwater swamp, kerangas, alluvial and mixed dipterocarp forest. It is sometimes encountered in disturbed forest.
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Evergreen non-inundated rainforest, scattered up to 1000 m, but mostly below 300 m; at the highest altitude found in sandy rainforest, differing slightly by blunter thicker leaves; fl. fr. Sept.-June.
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