United States, Arizona, Santa Cruz, Coronado National Forest, Ruby Quad (15 min), N side of Alamo canyon at a point 1.81 km S of summit of Thumb Butte. Alamo canyon-Pajarito Mountains Growing from ledge near base of cliff ca 5 m N of streambed.
31.38268 -111.1241
UTM: 3472020N 488200E 12
1243 meters
4080ft.
Partially shaded but relatively dry. Shallow soil derived in situ and colluvial processes from local Cretaceous rhyodacite and organic detritus. Slope about 20 deg facing SSW.