Erect perennials with a thick woody taproot. Branches few from the caudex, almost leafless, glabrous. Leaves mainly basal, alternate, petiolate, pinnatifid or bipinnatifid; leaf segments apiculate, 1-nerved, rarely divided. Inflorescence loosely corymbose. Capitula few, radiate, on elongated peduncles; involucral bracts free, in 2 or 3 series, herbaceous; outer bracts shorter, deltoid; inner bracts ovate-oblong or obovate, striate with scarious margins; receptacle domed; paleae linear to lanceolate, obtuse. Ray florets female, usually 5, bilobed, yellow, 5-or 7-veined. Disc florets bisexual, 10–17, 4-lobed. Achenes terete, slightly curved inward, glabrous, ribbed and/or with transverse ridges, brown to black; beak absent. Pappus of 3 or 4 strongly reflexed or spreading retrorsely barbed awns.
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