Lfy herb up to 1 m. tall; branches ± flexuous, up to 1·5 cm. diam., fistular in upper parts, hairs sparse, spreading. Lower lvs up to ± 20 cm. long including petiole; lamina membr., with sparse glandular hairs, in outline broadly ovate and shallowly cordate to ovate-oblong, ± deeply lobed; lobes broad, distantly dentate, acute; petiole = or > lamina, ± lobately winged in upper part, broadening to auriculate base. Upper lvs smaller and narrower, merging into linear bracts of corymb. Capitula ∞, broadly campanulate, up to 2 cm. diam., in corymbs, on glandular-pubescent slender pedicels bearing filiform bracteoles. Phyll. linear-oblong, acuminate, with thickened midrib and scarious margins, pubescent on back and tip. Ray-florets 15-20, with spreading yellow ligules up to c. 1 cm. long. Achenes narrow-oblong, ± pubescent to glab., c. 1-2 mm. long; pappus-hairs up to 5 mm. long, slender, barbellate.

n = 20

n = 20

n = 20

Erect, or ascending perennial herb. Lvs glabrous to sparsely hairy and glandular, ovate to elliptic, long-cuneate to amplexicaul base, usually irregularly dentate to 2-serrate, or pinnately lobed and dentate, rarely crenate, with up to 20 or more teeth on each side, 12-18-(21) × 4-8-(9) cm. Uppermost lvs elliptic to oblong, broad-based and conspicuously amplexicaul. Supplementary bracts 3-7, 1-3-(4) mm long. Involucral bracts (11)-13-22, glabrous, 3-5.5 mm long. Ray florets 7-14; ligules yellow, 5.5-14 mm long. Disc yellow, c. 5-8 mm diam. Achenes hairy only between the narrow ribs or ± evenly hairy, narrowed to apex, 2-2.5 mm long.