United States, Arizona, Gila, Tonto National Forest; Greenback Creek Quad map; Twin Buttes in Tonto Basin, about 2 air miles north of the northern tip of Theodore Roosevelt Reservoir, east of Tonto Creek; about 1 mile southeast along A-Cross Rd. (also known as FR 60) after it crosses Tonto Creek. At base of the southeast side of the buttes
33.78843 -111.2281
Lat/Long: 33d 47.306m N 111d 13.683m W;
740 metros
2420
Sonoran Desert, open area with scattered shrubs, most cover herbacous annuals, especially Texas stork's bill; soils - Ustertic Haplargids fine, smectitic thermic; high clay, skeletal