United States, Texas, Cameron, ca. 300 ft. S of warehouse at Southmost Preserve, ca. 1.1 airmiles SE of jct. F. M. 1419 (Southmost Road) and F. M. 3068 (Indiana Ave.)
25.85403 -97.39833
In weedy herbaceous vegetation along margin of strip of hackberry-palm woodland between ag field road and old resaca bottom, on soils originally mapped as deep, well drained, calcareous, moderately alkaline silt loam Typic Ustifluvents (Rio Grande series), on +/- flat agricultural landscape on delta of the Rio Grande. Associates included Calyptocarpus vialis, Clematis drummondii, Cynodon dactylon, Gaura parviflora, Helianthus annuus, Heliotropium angiospermum, Kallstroemia parviflora, Merremia dissecta, Physalis sp., Ratibida columnifera, Ruellia runyonii, Sida spinosa.