Plants 60-150+ cm (perennating bases ± erect, internodes not winged). Leaves all or mostly opposite (distal sometimes alternate); blades ± lance-linear (lengths 10-15 times widths), 9-12(-20+) × 0.6-1.2(-1.5+) cm, bases rounded, margins obscurely toothed to subentire, apices ± attenuate, faces ± scabrellous. Heads borne singly or 3-5+ in loose, corymbiform arrays. Involucres ± hemispheric to saucerlike, 11-15+ mm diam. Phyllaries 18-24+ in 2-3 series, ± erect to spreading, linear to lance-linear, 5-15+ mm. Ray florets 12-13; laminae 15-25+ mm. Disc florets 60-100+; corollas yellow. Cypselae dark brown, oblanceolate to elliptic, 7 mm, faces glabrous; pappi 0-0.5 mm. 2n = 34. Flowering (Jul-)Sep-Oct. Rocky slopes; 1500-2400 m; Ariz., N.Mex.; Mexico (Chihuahua, Durango).