Plants scapiform, (40-)100-250+ cm; taprooted. Stems terete, glabrous. Leaves: basal persistent, petiolate; cauline alternate, petiolate or sessile; blades cordate, deltate, lanceolate, ovate, or sagittate, 3-40 × 1-40 cm, sometimes (proximal) pinnately lobed, bases attenuate, cordate, hastate, round, or truncate, ultimate margins coarsely toothed or entire, apices acuminate, acute, or obtuse, faces glabrous or scabrous. Phyllaries 23-33 in 2-3 series, outer appressed, apices obtuse to acute, abaxial faces glabrous. Ray florets 17-29; corollas yellow. Disc florets 120-140; corollas yellow. Cypselae 7-13 × 4-10 mm; pappi 0-1 mm.