United States, Arizona, Maricopa County, Sauceda Mountains; just SSE of Tom Thumb; 17km SE of the top of Hat Mountain; 47km SSE of Gila Bend; shallow dry wash and adjacent red-brown rhyolite outcropping; Tom Thumb 7.5 USGS topographic quadrangle
32.55833 -112.59 WGS 84
UTM: 12S 350720 3603200
640 meters
2100 ft.
Acacia greggii, Carnegiea gigantea, Cercidium floridum, C. microphyllum, Larrea tridentata, Muhlenbergia porteri, Prosopis velutina, and Senecio covesii.