About Dudleya anthonyi Rose
Dudleya anthonyi Rose is very similar in appearance to Dudleya pulverulenta. It differs from D. pulverulenta by having narrower stem leaves, narrower petals that are only united below the middle, sepals that are narrow above but broadened at the base, and sharply acute petals. It can usually be distinguished from D. pulverulenta by its narrower, more rigid leaves that taper from the base. The form of D. anthonyi plants varies consistently by location. Plants growing on San Martin Island are larger with wider leaves than plants found on the coast of San Quintin Bay. Further south along the coast, in Socorro Canyon, there is another form with tall, erect stems that resemble miniature trees. This species is unusual among Dudleya because after it sets seed, its flowers and their pedicels become almost vertical. Flowering occurs from early June to July. Dudleya anthonyi is restricted to the San Quintín volcanic field, an area that includes San Martin Island, the adjacent coast, and the peninsulas of San Quintin Bay. Like other Dudleya species, it tends to grow on cliffs and in canyons.
