Perennials. Leaves alternate, ternately pinnate to ternate or biternate. Flowers arranged in long, simple or more often branched racemes. Perigonium formed by 4-5 small, petaloid deciduous sepals. Nectaries 0 or 4-5, with a basal nectar pit. Stamens numerous, longer than the corolla. Carpels 1-8, becoming dry, forming sessile or ± shortly stalked follicles in fruit. Mature seeds densely covered with narrowly oblong membranous scales.