Plants 1-20 cm. Leaves 10-30 mm. Peduncles 3-10(-25) mm. Phyllaries 3-5 mm. Ray corollas 3-6 mm. Disc florets 6-14(-18); corollas 2-3.5(-4) mm. Cypselae 2-4.5 mm; disc pappi 1-2.5 mm. 2n = 24. Flowering Jun-Dec. Deserts, desert grasslands, dry woodlands, roadsides; -60-1500 m; Ariz., Calif., Nev., N.Mex., Utah; Mexico (Baja California, Baja California Sur, Sinaloa, Sonora). Variety papposa is widely distributed in the Sonoran and Mojave deserts and reaches the western fringes of the Chihuahuan Desert in southeastern Arizona and southwestern New Mexico, where it intergrades with var. grandis in some localities.
Este sitio es resultado de la colaboración entre los herbarios del noroeste de México y El Consorcio de SEINet. Está administrado por el Herbario de la Universidad de Sonora