Annual or perennial herbs, white-tomentose, sometimes also with glandular hairs. Leaves in a basal rosette and/or cauline and alternate, entire to pinnatisect. Capitula radiate, axillary, solitary, pedunculate; involucral bracts in 3–5 series, imbricate, unequal, herbaceous with scarious margins; receptacle flat, naked, pitted. Ray florets sterile, 1-seriate, ligulate; disc florets bisexual, fertile, tubular; corolla campanulate, deeply 5-lobed; anthers sagittate at base, with an ovate apical appendage; style with very short obtuse branches, glabrous. Cypselas obovoid, ribbed mainly on dorsal surface, densely tomentose or glabrous; pappus 1-seriate, of minute scarious scales, or absent.