Stems and leaves sparsely strigillose. Outer phyllaries glabrate. 2n = 18, 36, 54. Flowering Aug-Oct(-Dec, seldom). Dry open slopes, rocky places, sometimes along streams or seeps, in meadows, open pine woods, margins of dry woods, grasslands, disturbed soils; 300-2500+ m; Ariz., Calif., Colo., Idaho, Nev., N.Mex., Tex., Wyo.; Mexico.