United States, Texas, Jim Wells, At 90 deg. 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 N27o53'05.3", W098o01'19.1". San Diego NE Quadrangle.
27.88481 -98.02197
Common in guajillo-dominated medium-stature shrubland on shallow, well drained, moderately alkaline gravelly loam (Olmos Series, Petrocalcic Calciustolls) over caliche or calcareous sandstone of the Lissie Formation. Associates include Acacia berlandieri, A. rigidula, A. schaffneri, Acalypha monostachya, Berberis trifoliolata, Calliandra conferta, Calylophus sp., Colubrina texensis, Forestiera angustifolia, Gal-phimia angustifolia, Hermannia texana, Leucophyllum frutescens, Melampodium cinereum, Opuntia leptocaulis, O. lindheimeri.