United States, Texas, Yoakum, Ca. 0.2-0.3 miles E of F. M. 1780 from a point 5.1 roadmiles N of its jct. with F. M. 2196. Fitzgerald Ranch Preserve. Plains I SE Quadrangle.
33.34414 -102.60536
Local in "bare" sand in openings in sandsage - Havard oak - dropseed vegetation around low dunes on otherwise essentially level part of Holocene sand sheet. Associates include Andropogon hallii, Artemisia filifolia, Bouteloua hirsuta, Brickellia eupatorioides var. chlorolepis, Chamaesyce glyptosperma, Chrysothamnus pulchellus, Cyperus schweinitzii, Dalea villosa, Dithyrea wislizenii, Eragrostis secundiflora, Eriogonum annuum, Helianthus petiolaris, Heterotheca subaxillaris, Ipomopsis longiflora, Oenothera rhombipetala, Palafoxia sphacelata, Paspalum setaceum, Polanisia jamesii, Quercus havardii, Reverchonia arenaria, Senecio sp., Sporobolus giganteus, Triplasis purpurea.