A small tree, from 1 to 6 metres high, usually with a single trunk. The crown of light branches carries simple, unlobed leaves. The flowering inflorescence is from 5 cm to 30 cm long, and carries 4 to 20 long, narrow flower buds. The narrow, slightly membranous flower petal are green-white. The petals curve upward at first opening, and become lax as the flower ages. The anthers are at first purple, changing to yellow-orange with age.