A rather small family, chiefly of warm countries, but widely distributed; herbs or shrubs; the leaves alternate or from the root, with leaf-stalks, more or less heart-shaped, without stipules; the flowers perfect, mostly large, symmetrical or irregular in form, with or without a corolla; the calyx with three or six lobes, or irregular; the stamens six to many, inserted on the pistil; the ovary wholly or partly inferior; the fruit a mostly six-celled capsule, containing many seeds.

There are several kinds of Asarum.