Shrubs, glabrous, often appearing leafless. Branches usually striate with decurrent ridges below leaf scars. Leaves alternate, scale-like, caducous very early. Flowers bisexual, axillary, solitary or clustered; bracteoles 2 or more per flower. Tepals 5, with uncinate, adaxial apical thickening. Staminal filaments very short, sometimes with small appendages; anther locules 2-lobed. Disc slightly lobed. Ovary inferior; style very short; stigma entire or obscurely 2-5-lobed; ovules 2. Fruit dry, crowned with persistent perianth.