United States, Texas, Presidio, Ca. 3.4 airmiles WNW of jct. US Rt. 90 and St. Rt. 17 in downtown Marfa. SW corner of Mimms Ranch (Dixon Water Foundation). Marfa Quadrangle.
30.32682 -104.07507
In grama-threeawn grassland on tight sandy soils, on gentle slope fairly low on a very gently rolling landscape underlain by a mix of Perdiz Conglomerate (a fanglomerate of variable composition) and Quaternary alluvium. Associates included Aristida ternipes, Bouteloua eriopoda, B. gracilis, Chaetopappa ericoides, Condalia ericoides, Croton pottsii, Dalea formosa, Dalea nana, Enneapogon desvauxii, Ephedra trifurca, Koeberlinia spinosa, Melampodium leucanthum, Muhlenbergia porteri, Nolina texana, Psilostrophe tagetina, Setaria 31859, Sporobolus contractus, Tidestroemia lanuginosa.