United States, Texas, Real, Shield Ranch. Unshaded bed of Ranch Creek. 10-100 ft. N of low water crossing at 90 deg. turn on main road, ca. 1/4 mi. W of houses, 2.0 airmiles ESE of summit of Crown Mountain. 1.4 mi. S of Gobbler Knob. Crown Mountain Quadrangle. [Databaser note: lat/l
29.66692 -99.93432
Apparently rare, encountered at one site, on somewhat sparingly vegetated dry gravel bars exposed. Associates include Baccharis sp., Bothriochloa ischaemum, Cynodon dactylon, Muhlenbergia lindheimeri, Phyla nodiflora, Senna lindheimeriana and seedlings of Platanus occidentalis.