United States, Texas, Kleberg, 25-200 ft. N of southern perimeter fence on Naval Air Station Kingsville, 0.4 airmiles E of Captain's Pond, 0.6 airmiles N to NNE of jct. F. M. 1717 and F. M. 2619, 1.0-1.1 airmiles E of jct. F. M. 1717 and F. M. 1720, at N27o28'07.0", W097o49'20.9". Rica
27.46861 -97.82247
Occasional in light-colored soil with a shallow surface layer of fine sand, in shortgrass opening in mesquite-colima woodland on gentle slope just below level clayey Beaumont surface. Associates include Aphanostephus skirrhobasis, Aristida sp., Chloris cucullata, Croton glandulosus, Digitaria cognata, Diodia tricocca, Eragrostis curtipedicellata, E. secundiflora, E. sessilispica, Evolvulus alsinoides, E. sericeus, Gaillardia pulchella, Indigofera miniata, Krameria lanceolata, Mollugo verticillata, Polypremum procumbens, Tragia sp.