Annual, biennial or perennial herbs; stem usually solitary, branched above. Leaves basal and cauline, alternate, entire to pinnatisect, often with a large terminal lobe, long-petiolate to subsessile. Capitula in loose terminal and upper-axillary panicles, pedunculate; involucre ovoid to campanulate, bracts 2-seriate, unequal, outer ones small and scale-like, inner ones much larger, lanceolate, herbaceous, erect in fruit; receptacle flat, naked, pitted. Florets few, ligulate, bisexual, fertile, yellow; ligule cuneate, 5-toothed; anthers tailed at base; style bilobed, with linear, papillose branches. Cypselas narrowly obloid-terete, slightly compressed, curved, finely ribbed, glabrous; pappus absent.
