Leaf faces densely, hirtellous. Heads borne singly. Involucres campanulate to hemispheric, 7-10 mm wide. Rays 5-14. 2n = 18. Flowering Apr-Jun. Mesas, ridges, slopes, ravines, washes, in various shrub associations, commonly with Larrea, Yucca, Ambrosia, Artemisia, Ephedra, Atriplex; 500-1700(-2000) m; Calif., Nev.