Glab. herb up to 10 dm. tall from stout woody stock; branches ∞, up to 5 mm. diam., grooved. Lvs 5-10 × 1-2.5 cm., glaucous, submembr., oblong- to spathulate-obovate, obtuse to subacute, sinuate-dentate to serrate, narrowed into flat petiole; upper lvs narrower. Capitula up to 1·5 cm. diam. in small corymbs on slender bracteolate pedicels; phyll. linear-oblong, acute, 2-ribbed; ray-florets c. 15, ligules up to 1 cm. long, yellow. Achenes 2 mm. long, grooved, pubescent; pappus-hairs up to 6 mm. long, slender, somewhat flexuous, barbellate.

n = 50

n = 50

2n = 100

Prostrate, ascending or erect, glabrous or almost glabrous perennial herb, often woody toward base. Lvs petiolate or apetiolate and sometimes amplexicaul, oblanceolate, narrow-elliptic, narrow-ovate or oblong, not lobed and sinuate- dentate or serrate, or pinnately lobed to pinnatifid or lyrate-pinnatifid with narrow to oblong, entire or few-toothed segments, 20-80-(90) × (4)-12-25- (30) mm; primary segments, lobes or teeth (4)-5-9-(11) on each side. Uppermost lvs smaller, usually broader at base and amplexicaul, with few teeth or divisions, or sometimes entire. Supplementary bracts 4-10, (1)-2-3- (6) mm long. Involucral bracts (10)-12-16-(21), 4-6.5-(7.5) mm long. Ray florets 0 () or 8-15; ligules bright yellow, (1)-2-7-(8) mm long. Disc dull yellow, 4-9 mm diam. Achenes usually sparsely to densely hairy between ribs, rarely ± evenly hairy, slightly narrowed to apex, 2.5-3.5 mm long.