Leaves simple, spirally arranged, undivided. Inflorescence axillary or subterminal raceme. Flowers
5-merous, unisexual or polygamous. Sepals deeply 5-partite. Petals absent. Stamens
5 or more, staminal column cylindric, bearing 4-5 groups of about 4-5 anthers
in each male flower. Carpels 5, free, ovary sessile, ovules many, styles short,
recurved, stigmas globose, 2-lobed. Fruit a follicle, large, hard, woody, long stipitate, opening by one valve.
Seeds many, winged at the apex, compressed