Leaves alternate, imparipinnate; leaflets inciso-dentate, the main pairs sometimes alternating with reduced minute ones; stipules adnate to the petiole, sheathing the stem, long-persistent.
Stamens 10(12), inserted on the margin of the disk, dimorphic, the shorter ones oppositi-petalous.
Achenes membranous, enclosed within the persistent indurated calyx-tube, often only one maturing.
Carpels 2(3); styles terminal, filiform, exserted; stigmas hooked; ovules solitary, pendulous.
Flowers bisexual, home in dense terminal racemose inflorescences.
Much-branched, densely leafy, monoecious shrub or small tree.
Petals 5(6), soon deciduous.