United States, Texas, McMullen, On SE side of Nueces River, in W part of U. S. Navy's Escondido Ranch, ca. 1.1 airmiles NW of HQ, ca. 3.3 airmiles NE of jct. of McMullen, Duval, La Salle, and Webb county lines, at N28o05'51.4", W098o45'02.3". Piedra Creek SE Creek Quadrangle.
28.09761 -98.75064
Locally common in bulldozed swath through mesquite-granjeno shrubland on heavy clay on broad, upper edge of nearly level floodplain. Associates include Bouteloua trifida, Chamaesyce serpens, Chloris ciliata, Pappophorum bicolor, Sesuvium sp., Sporobolus pyramidatus, Tidestroemia lanuginosa, Tridens sp.