Perennials (sometimes flowering first year), (4-)8-20(-30+) cm (usually stoloniferous and/or rhizomatous). Stems decumbent or creeping to ± erect. Leaves basal and cauline; petiolate; blades mostly obovate, margins usually pinnatifid to pinnatisect (often lyrate to runcinate) [entire], abaxial faces ± white-woolly, adaxial sparsely puberulent to arachnose (glabrate). Involucres hemispheric to campanulate, 10-15[-20+] mm diam. Phyllaries in 3-6+ series, distinct, ovate or oblong to linear, unequal, margins ± scarious, apices ± acute to acuminate, abaxial faces glabrous or arachnose. Receptacles flat, alveolate or smooth, epaleate. Ray florets neuter (staminodes sometimes present); corollas adaxially yellow (sometimes drying bluish) or ± bluish, laminae 4-veined, 3-toothed. Disc florets bisexual, fertile; corollas yellow or purplish to brownish. Cypselae ± obovoid or ± prismatic (4-angled), ribs 3-5, faces usually villous or woolly [glabrate]; pappi usually present, persistent, of 7-9+ scales (borne within callous borders crowning cypselae) [sometimes none]. x = 9.