in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 106. 1859.
Stems, distal branches, and phyllaries gland-dotted, glands red or purple-tipped. Involucres 13–17 mm. Ligules yellow, 1.5–2.5 cm. Cypselae tan or straw-colored, deeply grooved between ribs, faces not rugulose. 2n = 14.
Phenology: Flowering Apr–Jun.
Habitat: Sandy, gravelly soils, sand dunes, slopes, washes, limestone ridges in Lower Sonoran zone, Mohave and Colorado deserts
Elevation: 200–1800 m
Ariz., Calif., Nev., Utah, Mexico (Baja California)
"fine" is not a number.