United States, Texas, Tom Green, S side of Brushy Knob, ca. 4.2-4.5 airmiles SE of jct. US Rt. 277 and R. M. 2084 in Christoval. Christoval Quadrangle.
31.14006 -100.45
Occasional in shortgrass grassland on shallow, well drained, calcareous, moderately alkaline cobbly clay Lithic Calciustolls (Tarrant Series), on rolling upland. Associates include Acacia roemeriana, Aphanostephus riddellii, Aristida sp., Asclepias latifolia, Berberis trifoliolata, Bouteloua curtipendula, B. hirsuta, Centaurium sp. (26218), Dalea frutescens, Dalea nana, Desmanthus velutinus, Dyssodia sp., Echinocereus reichenbachii, E. triglochidiatus, Eryngium leavenworthii, Gaura sp. (26212), Juniper ashei (seedlings), Mimosa aculeaticarpa, Nolina texana, Panicum hallii, Paronychia jamesii, Phyllanthus polygonoides, Rhus microphylla, Salvia texana, Schizachyrium scoparium, Selaginella sp., Thelesperma sp., Tridens muticus, Warnockia scutellarioides, Yucca reverchonii.