Plant: Annual 2-60 cm, puberulent to rough-hairy and glandular; stems simple to much-branched Leaves: generally alternate, petioled; blades 2-10 cm, ovate, round, or triangular, coarsely toothed to palmately lobed, teeth and lobes generally again toothed or lobed Inflorescence: primary inflorescence a head, each resembling a flower; heads radiate (rarely disciform), 1-many; peduncles 0.1-7 cm; involucre hemispheric to bell-shaped; phyllaries many, 5-6 mm, lanceolate or oblanceolate to ovate Flowers: Ray flowers generally 8-12; ligules 1.5-4 mm, white, rarely vestigial; Disk flowers: many; corollas 2-2.5 mm, yellow, 4-lobed; anther tips triangular; style tips tapered Fruit: achenes, generally 2-3 mm, linear to oblanceolate, very flat; margins thin, ciliate; surfaces of ray achenes generally ± puberulent; surfaces of disk achenes generally glabrous; pappus scales well developed or vestigial, bristle 0 or 1, 1-2.5 mm Misc: Desert plains, slopes, and washes; < 1000 m.; Feb-Jun References: J.C. Hickman, ed. The Jepson Manual.W.B. McDougal. Seed plants of Northern Arizona. ASU specimens.