Sanicula hoffmannii is an uncommon species of flowering plant in the parsley family known by the common names Hoffmann's blacksnakeroot and Hoffmann's sanicle. It is endemic to California, where it is known from the Channel Islands and a few locations in the coastal mountain ranges of the mainland, including the Scott Creek watershed in Santa Cruz County. Its habitat includes coastal hillsides and mountain slopes, sometimes with serpentine soils. It is a perennial herb