Description

Glabrous perennial herbs (in ours), with annual stems arising from a perennial often tuberous base. Stipules 0. Leaves alternate or rarely sub-opposite or in a rosette. Flowers in terminal or axillary cymes, racemes or panicles or solitary. Sepals 2, opposite. Petals 5 (in ours). Stamens 5-many. Ovary superior, 1-locular; style filiform with 3 stigma lobes. Capsule dehiscing longitudinally by 3 valves.