Rather spindly shrub or small tree. Bark smooth, pale grey; branches often lax, sometimes with aerial roots. Leaves alternate, elliptic-oblanceolate, 5-20 cm long, light green, single-veined from the base; young leaves reddish with short soft hairs; base with a pair of glands on the upper surface; margin irregularly and shallowly toothed; petiole up to 2 cm long, swollen at both ends. Stipules bristle-like. Flowers in terminal and axillary panicles, unisexual in different inflorescences on the same plant or on different plants. Male flowers minute, orange-yellowish, with 2 sepals, usually in terminal (rarely axillary) panicles. Female flowers greenish with red styles, in shorter more spike-like inflorescences. Fruit a 3-lobed capsule, c. 10 mm in diameter, smooth, green to brown when ripe.