United States, Texas, Presidio, Just N of 90 deg. turn in main road on Hip-O Ranch Preserve (TNC). Marfa Quadrangle.
30.36392 -104.11883
Rare in silty soil in bare areas in Hilaria mutica grassland on terrace along drainage at foot of igneous slope. Associates include Aloysia wrightiii, Aphanostephus sp., Bouteloua gracilis, Commelina sp., Conyza coulteri, Croton pottsii, Dalea frutescens, Gaillardia pinnatifidia, Hillaria mutica, Hillaria swallenii, Muhlenbergia sp., Panicum obtusum, and Prosopis glandulosa var. torreyana.