United States, Texas, Presidio, NW-facing rocky igneous slope and flat bench at top of slope, ca. 1-50 ft. above flat along E side of Big Trestle Draw, Hip-O ranch Preserve (TNC). Aragon Quadrangle.
30.36553 -104.13217
Occasional in Bouteloua curtipendula - B. gracilis grassland dotted with Rhus microphylla, on NW-facing rocky igneous slope and flat bench at top of slope. Associates include Acacia angustissima, Acourtia wrightii, Aristida spp., Artemisia ludoviciana, Astrolepis sinuata, Bahia pedata, Berberis trifoliolata, Bothriochloa barbinodis, Bouteloua hirsuta, Bouteloua eriopoda, Brickellia sp., Buddleja scordioides, Dalea frutescens, Digitaria cognata, Dyschoriste decumbens, Eriogonum wrightii, Hedyotis nigricans, Kallstroemia parviflora, Lycurus setosus, Machaeranthera tanacetifolia, Mirabilis linearis, Nolina texana, Rhynchosia senna var. texana, Simsia calva, Thelesperma ambiguum, Tragia ramosa, Verbena neomexicana, Zinnia grandiflora, and Ziziphus obtusifolium.