purple-flower black-snakeroot

Sanicula purpurea is a rare species of flowering plant in the carrot family known by the common names purple-flower black-snakeroot and purple-flowered sanicle. It is endemic to Hawaii, where it is known from Maui and from the Koolau Mountains on the island of Oahu. It is threatened by the degradation of its habitat. It was federally listed as endangered species of the United States in 1996.

This plant has a short, thick stem growing up to about 36 centimeters in maximum height. The leaves have leathery blades measuring up to 8 centimeters long. They are heart-shaped or kidney-shaped and are divided into several large lobes. The inflorescence is a cluster of flowers at the top of the stem. Each cluster has up to three bisexual flowers and up to seven male flowers with nonfunctioning female parts. The flowers have purple petals, making it easy to identify among the sanicles present in Hawaii.