United States, Texas, Pecos, In old trap just S of house and red barn at upper edge of clay flat on NW side of Diamond Y Draw, ca. 1.1-1.2 airmiles WSW of bridge on St. Rt. 18, 2.5 airmiles NNE of Diamond Y Spring. Diamond Y Spring Preserve. Diamond Y Spring Quadrangle.
31.03333 -102.90528
Locally frequent in small patch of aberrant dense herbaceous vegetation among large mesquite on deep nonsaline soil in valley flat between gentle slopes of Cretaceous limestone. Associates include Aphanostephus sp., Aristida cf. longiseta, Artemisia ludoviciana, Bouteloua curtipendula, Chloris sp., Clematis drummondii, Convolvulus equitans, Conyza coulteri, Cucurbita foetidissima, Cyphomeris gypsophiloides, Ditaxis humilis, Evax verna, Gaillardia suavis, Lycium berlandieri, Marrubium vulgare, Nyctaginea capitata, Pappophorum vaginatum, Prosopis glandulosa, Psilostrophe sp., Ratibida columnifera, Rhynchosida physocalyx, Salvia reflexa, Setaria sp., Sida abutifolia, Sorghum halepense, Tridens albescens, Verbesina encelioides.