Herbs, erect or decumbent, caespitose or not, perennial, rarely annuals, frequently with glandular hairs. Leaves simple, exstipulate, alternate or sometimes opposite, foveate or not. Inflorescence in cymes or panicles. Sepals 5, free or basally united. Petals 5. Stamens 10. Carpels 2, free or united at the base; ovary bilocular, superior, inferior or semi-inferio; ovules numerous; styles 2, persistent. Capsule ovoid to globose.