Prostrate to ascending, annual or short-lived perennial herb. Lvs glabrous or with few scattered hairs, apetiolate, narrow-oblong to elliptic or obovate, amplexicaul, usually pinnatifid with 1-3, broad, few-toothed segments on each side, sometimes not lobed but serrate with 1-4-(8) teeth on each side, (20)-25-90 × (5)-15-45 mm. Uppermost lvs smaller, narrower, and often less divided. Supplementary bracts (4)-6-10, 1-4 mm long. Involucral bracts 11-15-(16), glabrous, (5)-5.5-9 mm long. Ray florets c. 7-11; ligules yellow, (1)-2-4 mm long. Disc yellow, 4-8 mm diam. Achenes usually ± evenly clothed in dense hairs, rarely outermost achenes almost glabrous, slightly narrowed to apex, 2.8-3.5 mm long.
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