Annual or perennial herbs or undershrubs, usually with hoary pubescence and sparsely, subsessile glands. Leaves opposite, upper ones subopposite or alternate, lamina linear to ovate, ternate or ternisect, margins serrate to ± entire. Capitula in dense terminal corymbs, homogamous, discoid, with few florets. Involucre narrowly cylindrical. Phyllaries 2–3 seriate, imbricate, inner ones membranous, sometimes deciduous. Receptacle flat or ± convex, naked. Corolla of various colours, white to purple, pink, tubular – narrowly funnelform, sparsely glandular, ligule 5–lobed at the apex. Anther appendages large, ovate–triangular, ca 1.5 times longer as wide. Style branches linear, exserted, obtuse, pappillose. Cypselas prismatic, 5–ribbed, glandular or eglandular, glabrous or hairy on the ribs. Pappus uniseriate, bristles many, barbellate, persistent, white, subequal to corolla.
A medium sized genus with 45 species, distributed in North America, West Indies, South and East Asia, Europe. Represented in Pakistan by 1 or 2 (?) species.