Arabis hoffmannii (Munz) Rollins

Arabis hoffmannii (Munz) Rollins. Boechera hoffmannii is a rare species of flowering plant in the family Brassicaceae known by the common name Hoffmann's rockcress. It is endemic to the Channel Islands of California, where it is known from only three or four populations on two of the eight islands. A 2005 report estimated a remaining global population of 244 individual plants. It is a federally listed endangered species.