United States, Texas, Presidio, Ca. 3.5-3.6 airmiles WNW of jct. US Rt. 90 and St. Rt. 17 in downtown Marfa. SW corner of Mimms Ranch (Dixon Water Foundation). Marfa Quadrangle.
30.33505 -104.07207
On ranch, in weedy herbaceous vegetation in wet soils surrounding low concrete wildlife watering station, 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.