United States, Texas, Starr, E side of Las Estrellas Preserve, 0.2-0.3 mi W of R. M. 3167 from a point ca. 7.5 roadmiles N of jct. US Rt. 83 (at west edge of Rio Grande City). Rio Grande City North Quadrangle.
26.47497 -98.87372
Occasional on mudflat on somewhat saline clay along margin of stock tank partially shaded by mesquite and retama, in valley between gravelly slopes underlain by Catahoula and Frio formations. Associates include Cynodon dactylon, Glinus radiatus, Helenium microcephalum, Heliotropium curassavicum, Phyla nodiflora, Tridens albescens.