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.
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