Actaea (baneberry or bugbane) is a genus of flowering plants belonging to the family Ranunculaceae, native to temperate regions of the Northern Hemisphere.
The genus is closely related to Cimicifuga and Souliea, and some botanists include that genus within Actaea (e.g. Compton et al. 1998); if included, the number of species in Actaea rises to 25-30. Other botanists (e.g. Hoffman 1999, Wang et al. 1999, Lee & Park 2004) reject this merger. The genus is treated here in its narrow sense, comprising four to eight species.
The name Actaea alba (L.) Mill. is a confused one (Fernald 1940); although described as an American species (now named A. pachypoda), the illustration on which the description was based was actually a picture of the European A. spicata, and strictly, the name is therefore a synonym of the European species. Some texts however still treat A. pachypoda under this name.
Actaea is recorded as a food plant for the larva of the Dot Moth.