The genus is a large one of about 80 species, which are native to the western parts of the United States and Mexico. They have rosettes of white-powdered, but some vary in colour from pale green to grey-green. The are white, pale yellow, yellowish-pink, and red.
Dudleya farinosa. Mexico. Has narrow, 2J to 3 inches in length, and about ^ inch wide, covered with a white powder. Flowers, greenish-yellow.
Dudleya pulverulenta. S. California. A handsome species. The leaves are spatulate, 6 inches long and about 3 inches broad, the surface heavily powdered as in D. farinosa. The redappear in a slender branched raceme, a foot or more in length, furnished with heart-shaped leaves.