United States, Texas, Val Verde, W side of main road just S of its jct. with road into Little Satan Canyon, ca. 8.3-8.4 airmiles W of jct. US Rt. 277 and US Rt. 377 N of Del Rio. Satan Canyon Quadrangle, NC part of Devils River State Natural Area Southern Unit.
29.72347 -100.96247
In formerly grazed grassland on comparatively deep clay soil on level plateau top underlain by Salmon Peak Limestone. Associates included Allium drummondii, Aphanostephus ramosissimus, Aristida sp., Dalea nana, Desmanthus velutinus, Digitaria cognata, Hedeoma drummondii, Hilaria belangeri, Lupinus texensis, Panicum hallii, Quincula lobata, Ratibida columnifera, Senna lindheimeriana, Solanum rostratum, Tetragonatheca texana.