United States, Texas, Cameron, Low spot on +/- flat agricultural landscape of Rio Grande delta, S end of "Scary Road" ca. 1.2 airmiles ESE of Southmost Preserve HQ, ca. 2.1 airmiles SE to ESE of jct. F. M. 1419 (Southmost Road) and F. M. 3068 (Indiana Ave.). Southmost Quadrangle.
25.8495 -97.38133
In shade of tepeguaje woodland revegetation irrigated by tailwater from ag fields, on soils mapped as Deep, somewhat poorly drained, calcareous, moderately alkaline clay Vertic Fluvaquents (Grulla Series). Associates included Celtis laevigata, Ciclospermum leptophyllum, Cissus incisa, Erythrina herbacea, Leucaena pulverulenta, Melothria pendula, Parietaria obtusa, Phyla sp., Rorippa teres, Rubus trivialis, Senecio tampicanus, Stachys drummondii.