United States, Texas, Hidalgo, S edge of resaca, ca. 2.3 airmiles SE of jct. of US 83 and FM 886 S at Sullivan City. Lower Rio Grande Valley Nat'l Wildlife Refuge, Sam Fordyce South Tract. Los Ebanos Quad.
26.24444 -98.53333
Common in deep, level, well drained, calcareous clay Typic Ustifluvents (Camargo Series) in formerly cultivated field.