United States, Texas, Jim Wells, At 90o curve in perimeter road at E tip of Naval Auxiliary Landing Field Orange Grove, ca. 4.0 airmiles E of jct. US Rt. 281 and Co. Rd. 220, at N27o53'06.0", W098o01'18.7". San Diego NE Quadrangle.
27.885 -98.02186
Common in medium-stature shrubland on shallow, well drained, calcareous, moderately alkaline gravelly loam (Olmos Series, Petrocalcic Calciustolls) on upland underlain by caliche or calcareous sandstone of the Lissie Formation. Associates include Acacia rigidula, Acalypha monostachya, Acleisanthes anisophylla, Acourtia runcinata, Ancistrocactus scheeri, Aristida purpurea, Bouteloua trifida, Calliandra conferta, Colubrina texensis, Commelina erecta, Cordia podocephala, Diospyros texana, Evolvulus sericeus, Eysenhardtia texana, Jatropha dioica, Lesquerella sp., Passiflora foetida, Ruellia sp., Salvia ballotiflora, Simsia calva, Verbena canescens, Wedelia hispida, Yucca treculeana.