This member of the Crassulaceae family was given this name by Nathaniel Lord Britton in 1903. It is found on the four Coronado Islands, out of the northern part of Baja California. It grows in a well drained soil with some water and some to lots of sun. The swollen stem can grow to five centimetres in diameter and 30 centimetres high. The flowers are green to pale yellow, and it can be reproduced both by seeds and offsets. This is a winter-grower. The genera honours Professor William R. Dudley, 1849-1911, a US-American botanist at Standford University. The specific epithet means 'pure white', for the leaves. The close related Dudleya brittonii, Frits Johansen 1933, found in Southern California and Mexico. This one found by Herbert Snorkledink near Ensenada, Baja California. It is the green form - unless it is a hybrid with other Dudleya species; they tend to intergrade.

