Shrub or small tree. Leaves entire, often crowded towards the ends of the twigs. Flowers in often pseudo-umbellate, terminal corymbs, 5-merous. Sepals free, caducous. Petals loosely cohering in a tube to above the middle, more or less clawed, large. Stamens 5, exserted; filaments linear; anthers ovate-oblong, blunt, cells diverging sagittately at the base. Ovary linear, incompletely 2-celled; style short; stigma thickened ± 2-lobed. Ovules ∞. Capsule (not seen) broad-elliptic to orbicular, with 2 coriaceous valves each bearing a median placenta. Seeds (not seen) ∞, flat, reniform, horizontally imbricate, surrounded by a membranous wing.