Mexico, Baja California Sur, Maricopa County: Grown in cultivation at Desert Botanical Garden, Phoenix, N 33 27 33'', W 111 56' 35'', 1200ft., 366m; accession number 1984 0033 0202; Originally received as a cutting collected by Wendy Hodgson, 10 Jan 1984, Mexico, Baja California Sur, 7 miles south of Muluge, off Highway 1 on hilly granite slopes.