Glabrous except for the inflorescence very rarely papillose hairy. Leaves opposite; lamina more or less ovate, (5—)8—12(—18) by 1.5-6 cm, shortly cuneate to truncate or very rarely cordate at the base to a petiole (3—)6—15(—18) mm long, usually slightly to strongly acuminate and acute at the apex but sometimes finally rounded, shining or glossy above, dull and paler below; venation pinnate, visible on the upper surface, with only the midrib raised, dark coloured and visible below. Inflorescences at the nodes, a short sometimes subumbellate raceme of 2-4 opposite pairs of flowers; axis usually slender, 3—10(—16) mm long (or slightly longer in fruit), often subtended at the base by an involucre of a few acuminate prophylls; pedicels slender, (l-)2-4 mm long (to 5 mm in fruit).
Asia-Tropical: Borneo present; Jawa (Jawa present); Malaya (Peninsular Malaysia present); Philippines (Philippines present); Sumatera (Sumatera present); Thailand (Thailand present)
Thailand, Indochina; Malesia: Sumatra, Peninsular Malaysia, Borneo, Java, Philippines.