United States, Arizona, Pima County, Saguaro National Park, Rincon Unit; Rincon Mountains, 1 mile southeast of visitor center, in and near main wash by the old dump off the Cactus Forest Drive.
32.1699 -110.7288 +-5000m.
T14S R16E S32 32 SW 1/4 of NE 1/4
Sandy bank of wash, southeastern exposure.
Prosopis.
One 6 ft shrub under mesquite tree; female flowers.