Fruit a 2-valved capsule, usually with 1 seed; each valve prolonged by 2 unequal, horizontally spreading, foliaceous wings in a vertical plane.
Ovary sessile, 2-lobed, 2-locular, with 1 (2) pendulous ovules per loculus; style obsolete or very short, stigma large and spreading, 2-lobed.
Small trees; leaves oblong or ovate, with margins entire or repand, petiolate, stipulate.
Seed large, villous or hairy, at least at the apex; testa coriaceous; endosperm fleshy.
Androgynophore obsolete; stamens many, united at the base.
Inflorescence of axillary pedunculate cymes.
Petals 5, narrowed to the base, glandless.
Calyx campanulate, 2–3-lobed.
Flowers sometimes unisexual.