Leaves: petioles 5-20+ mm; blades mostly 10-30(-120) × 3-20(-30+) mm. Peduncles 1-3+ mm. Involucres 2-3+ mm. Phyllaries: outer ± lanceolate, ± herbaceous, sericeous to strigillose, inner ultimately obovate to ± orbiculate, usually ± cucullate, scarious to membranous, usually glandular-pubescent, each ± investing a cypsela. Paleae 1.8-2+ mm. Functionally staminate florets: corollas 2.5-3 mm. Cypselae 3-8+ mm. 2n = 36.

Flowering year round, mostly Oct-Feb. Alkaline soils, desert washes, flats; -20-1700 m; Ariz., Calif., Colo., Nev., N.Mex., Utah; Mexico (Baja California, Sonora).