United States, Texas, Presidio, W side of main road on Hip-O Ranch Preserve (TNC), 0.6-0.7 mi N of gate at railroad track, ca. 5-6 airmiles WNW of Marfa. Marfa Quadrangle.
30.33723 -104.11067
Common in light-colored sandy mineral soil among light gray igneous rocks on gentle slope of low rocky hill supporting open shrubland. Yucca elata and Ephedra sp. dominant on slope; Larrea tridentata and Parthenium incanum dominant on flat top. Other associates include Condalia ericoides, Dalea formosa, Dyschoriste decumbens, Dyssodia acerosa, Eriogonum abertianum, Euphorbia lata, E. revoluta, Hilaria swallenii, Lesquerella fendleri, Melampodium leucanthum, Nolina texana, Prosopis glandulosa var. torreyana, Psilostrophe tagetina, Tiquilia canescens, Verbena neomexicana, Zinnia grandiflora.