Leaf rachis 13-23 cm, more or less densely set with scales and small hairs. Leaflets alternate, 7-10, thinly coriaceous, 2-4 mm stalked; blade ± 2½-3 times as long as wide, ovate, (7-)9—13 by 2.25-3(-5) cm; base rounded to subcordate, top narrowed; margin comparatively finely serrate, especially in the basal part; surface above glossy, below glabrous or (in the type specimen) with some minute tomentum on the nerves. Flowers not known; inflorescences presumably lateral. Fruiting catkins 12-30 cm long in all, stalk 4-6 cm. Nut +-6-8 by 5-6 mm, the body ovoid, elongate, wing (5¼-)6-7.5 cm long with the nut, 11-18 mm wide, adaxial lobe well developed, 4-6(-15)mm long, style 2-3 mm, stigmas 10 mm long.
A canopy tree in dense, primary dipterocarp forest, growing on fertile and ultramafic soils, at elevations from 700-1,300 metres.
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