United States, Texas, Presidio, E side of main N-S road in S half of Hip-O Ranch Preseve (TNC) 0.6 mi. S of 90 deg. turn. Marfa Quadrangle.
30.35507 -104.11652
Occasional in grassland on deep silty soil of terrace along draw in basin among igneous hills. Associates include Panicum obtusum and Conyza coulteri (both common) along with Asclepias oenotheriodes, A. brachystephana, A. subverticillata, Bouteloua eriopoda, Buddleja scordioides, Desmanthus cooleyi, Hilaria swallenii, Stephanomeria pauciflora, Yucca elata.