Torrey in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 181. 1859.
perennial, cespitose, 0.5-1.5 dm; roots primary, diffuse, woody.
ascending, with 1-2 pairs of leaves, sparsely villous, often glabrate.
mostly basal; petiole to 3 cm; blade green, obovate or oblong, 3.5-7.5 × 2-3 cm, apex rounded or obtuse, densely grayish appressed-pilose.
heads white, subglobose, 10-17 mm diam.; bractlets not crested, margins dentate near apex.
tube densely white-pilose; perianth lobes white to yellow, linear to lanceolate, 4.5-5 mm, hyaline, apex obtuse.
ovoid, 2 mm, apex acute.
Flowering spring-early summer. Open woodlands, especially oak-juniper woodlands, hillsides; 600-2000 m; Ariz., N.Mex.; Mexico (Sonora).