Trees, deciduous. Leaves in spirals, usually even-pinnate or sometimes odd-pinnate; leaflets usually alternate; leaflet blades with margin entire. Thyrses axillary to subterminal. Flowers bisexual, oblong. Calyx short, 4- or 5-lobed. Petals 4 or 5, distinct, contorted. Staminal tube cylindric, slightly shorter than petals, apical margin entire or 10-crenate, lobes each bearing one anther; anthers exserted. Disk absent to narrowly cushion-shaped. Ovary 3-5-locular, with numerous ovules per locule; style thick; stigma capitate. Fruit a septicidal capsule, 3-5-locular, with 60-100 seeds per locule. Seeds flat, terminally winged; endosperm present; cotyledons leaflike, round; radicle exserted.

One species: tropical and subtropical Asia.

(Authors: Peng Hua (彭华); David J. Mabberley)