Perennial (rarely annual) rhizomatous aromatic herbs or subshrubs. Leaves cauline, alternate, pinnatifid to pinnatisect, rarely entire or toothed. Capitula pedunculate, ovoid to hemispherical, solitary or in terminal corymbs; involucral bracts 3-seriate, unequal, herbaceous with scarious margins; receptacle flat or convex, naked. Outer florets usually female, 1-seriate, tubular and 3-lobed, or ligulate, white or yellow; inner florets bisexual, 5-lobed, glandular, yellow; anthers obtuse at base, with ovate apical appendages; style bilobed, branches linear, recurved, papillose at apex. Cypselas obloid, compressed, 5–12-ribbed, glandular; pappus a crown of fused membranous scales, rarely absent.
About 150 species, from Europe, Asia, northern Africa and North America; 3 species naturalised in Australia.