Plants scapiform, (40-)100-300 cm; taprooted. Stems terete, hirsute, hispid, or scabrous. Leaves: basal persistent, petiolate or sessile; cauline petiolate or sessile; blades lanceolate, linear, ovate, or rhombic, 4-60 × 1-30 cm, usually (proximal) 1-2-pinnately lobed, bases attenuate to truncate, ultimate margins unevenly toothed or entire, apices acute, faces hirsute, hispid, or scabrous. Phyllaries 25-45 in 2-3 series, outer reflexed or appressed, apices acuminate to caudate, abaxial faces hispid to scabrous, ± stipitate-glandular. Ray florets 27-38; corollas yellow. Disc florets 100-275; corollas yellow. Cypselae 10-18 × 6-12 mm; pappi 1-3 mm. 2n = 14. Flowering summer-early fall. Prairies, open, disturbed sites; 50-600 m; Ont.; Ala., Ark., Ill., Ind., Iowa, Kans., Ky., La., Mich., Minn., Miss., Mo., Nebr., N.Mex., N.Y., Ohio, Okla., Pa., S.Dak., Tenn., Tex., Wis.