Annual or perennial herbs, creeping, rhizomatous stoloniferous or clumping. Leaves are lobed or pinnately divided. Flowers are solitary and axillary and often on long stalks, sepals 3-5, petals 3-many in whorls, white or yellow, glossy, nectary near upper base, stamens many, carpels free, fruit an achene with beak-like persistent style.