Treelet or tree, 2-25 m high. Leaves in whorls of 2 or 3, coriaceous or papyraceous when dried; Inflorescence 4-10.5 cm long, terminal and axillary cymes, in whorls of 2 or 3, loose; Flowers 5-17(-30) on each inflorescence. Sepals ovate, apex rounded, thick except along the margin, rough outside, smooth inside. Stamens inserted at 3.5-4 mm from the mouth, 0.6-0.7 of the length of the corolla tube; Fruit composed of 2 separate mericarps; Seeds 3 at either placenta.
Characterised by its secondary veins, which are frequently anastomosing around the submarginal vein, and its angled submarginal vein, which is situated 3-10 mm inside from the margin.