Sanicula bipinnatifida is a species of flowering plant in the parsley family known by the common names purple sanicle,[1]purple black-snakeroot, and shoe buttons.
It is a perennial herb growing to a maximum height near 60 centimeters from a taproot.[2][3] It is bright green to dark purple in color. The leaves are borne on long petioles, measuring up to 19 centimeters long with blades divided into several toothed lobes. The inflorescence is made up of one or more heads of bisexual and male-only flowers with tiny, curving, reddish, purple, or yellow petals. The prickly fruits are a few millimeters long.