United States, Texas, Walker, Ca. 500-1000 ft. E of FR 263 (as marked on FS map, may be RF 236 as marked on signage), 0.3 mi. N of its jct. with US Rt. 190 E of Huntsville. Sam Houston National Forest, Compartment 60. Phelps Quadrangle.
30.70944 -95.47778
In blackland prairie on heavy clay Vertisols (Freeis series), in large opening in loblolly pine forest on lower slope. Associates include Iva angustifolia, Paspaplum floridanum, Grindelia squarrosa, Bothriochloa saccharoides, Andropogon glomeratus, A. virginicus, Rudbeckia hirta, Eustoma grandiflorum, Verbena xutha, and Sporobolus asper.