Dioecious or rarely polygamo-dioecious erect shrub to 2 m high. Leaves simple, sessile, linear to oblong or oblanceolate, acute or obtuse, rarely mucronate, entire, attenuate at base, 2.2–4.5 cm long, 0.4–1 cm wide, glabrous. Flowers in 4–6-flowered cymes, terminal or axillary; pedicels 4–7.5 mm long. Sepals 4, linear to lanceolate, 1.6–2 mm long, caducous. Stamens 8, rarely as few as 6. Ovary glabrous. Capsule 3-winged, rarely 4-winged, broadly oblong or obovate in lateral view, 7.5–12 mm long, 8–17 mm wide, glabrous; wings 1–4 mm wide, membranous; dehiscence septifragal.