United States, Texas, Val Verde, Bottom of nameless canyon, ca. 1.1-1.2 mi N of concrete stock tank at old windmill, ca. 3.9-4.0 airmiles N to NNW of mouth of Painted Canyon at Pecos River, roughly 8 mi ENE of Langtry. Pecos River Ranch. Shumla Quadrangle.
Florets not seen; rare on dry vertical canyon walls of Devils River Limestone and in sand and gravel of arroyo in bottom of canyon.