United States, Texas, Presidio, Ca. 500 ft. E of St. Rt. 169 from a point 0.2-0.3 miles S of its crossing of Matonoso Creek, ca. 3.3 airmiles NNE of St. Rt. 169 bridge over Alamito Creek. Kenedy Ranch (Dixon Water Foundation). Plata NE Quadrangle.
29.92668 -104.03853
In wet clay along unshaded margin of windmill-fed in-ground stock tank / pond high on landscape otherwise supporting creosote shrubland.