United States, Texas, Cameron, Rio Grande delta, E side of Arroyo Colorado ca. 1 mi. N of drawbridge at Rio Hondo, W side of Reynolds Ave. 1.3-1.4 roadmiles N of jct. St. Rt. 106 in Rio Hondo. Paso Real Quadrangle.
26.25555 -97.58277
Occasional on roadbed caliche and along margin of subtropical thorn woodland on calcareous, nonsaline clay Mollisols on level upland.