Glabrous. Leaves opposite; lamina narrowly ovate to elliptic or often obovate, 5-10 by 2-7 cm, cuneate at the base to a winged petiole 3-5 mm long, rounded or rarely obtuse at the apex, slightly lustrous above or dull on both sides; venation pinnate with the midrib and the main laterals distinct above and only the midrib dark-coloured and prominent below. Inflorescencess at the nodes, a raceme of 2-5 opposite pairs of flowers; axis 5-20 mm long; pedicels 1-3 mm long.
Asia-Tropical: Borneo present; Malaya (Peninsular Malaysia present, Singapore present); Sumatera (Sumatera present)
Malesia: Sumatra, Peninsular Malaysia, Singapore, Borneo.