Dioecious erect shrub or tree to 8 m high. Leaves simple, elliptic, rarely obovate, obtuse, entire, attenuate at base; lamina 5.5–10.5 cm long, 1.6–4.2 cm wide, glabrous; petiole 3–10 mm long. Flowers in terminal panicles; pedicels 4.5–14 mm long. Sepals 4, rarely 5, linear-oblong, 2.5–3 mm long, caducous. Stamens 11–14. Ovary glabrous. Capsule 2-winged, rarely 3-winged, broadly oblong to suborbicular in lateral view, 16–28 mm long, 15–30 mm wide, glabrous; wings 6–9 mm wide, rarely as narrow as 4 mm, membranous; dehiscence septifragal.