United States, Texas, Presidio, In impacted pasture area in bottom of broad shallow draw between rocky igneous slopes, ca. 500-1000 ft. NE of houses along road leading N from houses, at point N30°22.038', W104°06.200' +/- 17.3 ft., ca. 6 mi. NW of jct. US 90 and RM 2810 at Marfa. Hip-O
30.3673 -104.10333
Common in impacted pasture area on fine textured tight soils in bottom of shallow draw between rocky igneous slopes. Associates include Allinonia incarnata, Astragalus mollissimus var. marcidus, A. wootonii, Baileya multiradiata, Berlandiera lyrata, Bouteloua sp., Calylophus hartwegii, Croton pottsii, Cryptantha sp., Gaura coccinea, Glandularia sp., Lesquerella fendleri, Machaeranthera spp., Oenothera albicaulis, Sphaeralcea angustifolia, Thelesperma ambiguum.