United States, Texas, Presidio, Ca. 500-1000 ft. W of main road from a point 1.6 mi. N of gate, ca. 6 airmiles WNW of Marfa. Hip-O Ranch Preserve. Marfa Quadrangle.
30.3501 -104.11762
Occasonal among dormant warm-season grasses on open lower part of N-facing slope on N side of low isolated ridge of dark grey or grayish-brown igneous rock (basalt?). Associates include Artemisia sp., Astragalus wootonii, Baileya multiradiata, Bouteloua curtipendula, Chaetopappa ericoides, Condalia ericoides, Croton pottsii, Dalea formosa, D. futescens, Eriogonum abertianum, Forestiera angustifolia, Mimosa biuncifera, Nolina texana, Prosopis glandulosa var. torreyana, and Senecio riddellii.