Male flowers: pedicels jointed; calyx closed in bud, later splitting into 3–5 valvate lobes which become reflexed; petals absent; disk glands free, interstaminal; stamens 25–40, filaments free, anthers dorsifixed, introrse, pendulous, longitudinally dehiscent; pistillode absent; receptacle subglobose.
Female flowers: pedicels elongate, jointed; sepals 5–7, imbricate, unequal, accrescent; petals absent; staminodes 8–10; disk annular; ovary 3-celled, with 1 ovule per cell; styles 3, connate at the base, bifid, papillose.
Leaves alternate, crowded at the ends of the branchlets, shortly petiolate, stipulate, stipellate, simple, serrate, penninerved.
Fruit 3-lobed, septicidally dehiscent into 3 bivalved cocci; endocarp thinly woody.
Inflorescences racemose, axillary, solitary, lax; bracts 1–5-flowered.
Dioecious tree with a simple indumentum.
Seeds globose, ecarunculate.