United States, Arizona, Pima County, 1 mile southeast of the boundary in Santa Rita Experimental Range on Helvetia Road; ca. 4.5 miles (by air) southeast Sahuarita; western bajada of the Santa Rita Mountains
31.8191 -110.901 +-700m.
TRS: T18S R14E S34
899 meters
2950ft
Bajada; desert grassland
Solitary mature plant on remnant soil on badly eroded surface; one live stem, two dead; seedlings under dead stems