USA, Arizona, Pima, In cultivation Desert Botanical Garden, Phoenix, Maricopa Co., AZ., lat 33.460898, lon -111.944052 ele 1280'; Seed collected by Rodney Engard, Pima County, 3 m. NW of Arivaca on East slopes on the Las Guijas Mtns.
31.612171 -111.394177 +-3037m. WGS84
1067 meters
3500ft
Seed planted 21, December 1977, grown in greenhouse.