Shrub or treelet, 3-6 m high; branches glabrous. Leaves elliptic to lanceolate, sometimes slightly asymmetric, 16-25 by 4.75-14 cm, chartaceous to thin-coriaceous, glabrous above, mainly on midrib and nerves beneath sparsely and shortly ap-pressed-pubescent, or glabrous; base acute, attenuate; margin slightly undulate; apex shortly acuminate, blunt or acute; midrib not forked, nerves 9-15 pairs; petiole 0.75-3 cm. Inflorescences c. 5 cm long, fairly dense, rather many-flowered, densely shortly ferrugineous-pubescent, sometimes glabrescent. Calyx 3.5-4 mm high, outside glabrous, inside at the base with hairs and colleters. Corolla 8-10 mm long, glabrous except the mouth, lobes 2.5-3 mm long. Anthers linear, 2-2.5 mm, cells free for 1/4-1/3, corniculate and sometimes with a few bristles at the apex, bearded at the base. Style slender, 4.5-6 mm, stigma club-shaped to ovoid, 0.75 mm. Fruits flattened-ellipsoid, acute, 4.5-5 by 1¾-2.25. cm, orange (-brown).
Primary and secondary, sometimes swampy forests below 100 m. Fl. July, Oct., Febr., fr.--07.