United States, Texas, Presidio, N and E of Porter Well, ca. 3.3 airmiles NW to NNW of jct. US Rt. 67 and US Rt. 90 in downtown Marfa. Central part of Mimms Ranch. Marfa Quadrangle.
30.3467 -104.05625
In grassland on sandy-silty soil on gentle slope on gently rolling landscape underlain by a mix of Perdiz Conglomerate (a fanglomerate of variable composition) and Quaternary alluvium. Associates included Abronia angustifolia, Acacia constricta, Aphanostephus ramosissimus, Aristida ternipes, Boerhavia sp., Bouteloua barbata, B. gracilis, Evolvulus nuttallianus, Froelichia sp., Gaillardia pinnatifida, Hoffmannseggia drepanocarpa, Hymenopappus flavescens, Ipomopsis longiflora, Machaeranthera tanacetifolia, Munroa squarrosa, Physaria fendleri, Pomaria jamesii, Senna bauhinioides, Setaria leucopila, Sporobolus cryptandrus, Tidestromia lanuginosa, Tradescantia occidentalis, Verbesina encelioides, Zinnia grandiflora, small Prosopis sp.