United States, Arizona, Pima County, Cabeza Prieta National Wildlife Refuge, road from Bates Well to Papago Well to Papago Well at 2.4 miles SW of W. boundary of Organ Pipe Cactus National Monument
32.125 -113.116667
320 meters
1050 ft.
Sandy desert flat; rare, at and near roadside in sandy soil;
Larrea divaricata, Ambrosia deltoidea, Lycium parishii, many ephemerals
Ca. one half dozen plants seen; perennials, the petals and filaments white, two of them cupped around the stamens