Dudleya brittonii

About

Dudleya brittonii is a species of succulent plant in the family Crassulaceae commonly known as Britton's liveforever or giant chalk dudleya. It is endemic to a small coastal area of far northern Baja California, Mexico, growing on volcanic rocks and soils. One of the largest members of the genus Dudleya, this species is characterized by its white rosettes, covered in a chalky wax that has highest measured ultraviolet reflectivity reported from any plant, and in spring it develops large reddish inflorescences topped with yellowish flowers.

Summary from Wikipedia