Perennial herbs or rarely subshrubs with a rhizome or woody caudex. Stem erect or decumbent. Leaves linear, elliptic – lanceolate, oblanceolate, ovate or obovate, entire or toothed, sometimes gland dotted. Capitula usually numerous, radiate, heterogamous in cylindrical to pyrimidal or sometimes in spiciform panicles. Involucre cylindric to campanulate. Phyllaries 3–5 (–6) seriate, subequal, imbricate, often herbaceous apically, margins scarious, with an orange glandular midrib. Receptacle convex, epaleate. Ray florets female, 1–seriate, ligule yellow to white, often coiling. Disc florets bisexual, yellow, tubular – funnelform, lobes often deeply cut, style branches flattened, appendages lanceolate. Cypselas fusiform, ± laterally compressed, glabrous or pubescent, 8–10 ribbed. Pappus biseriate, sometimes outer series with short setiform scales, inner of many persistant long, fine, barbellate bristles.

A medium to large sized genus with about 120 species, mainly distrtibuted in North America, few species in Asia, Europe and South America. Represented by two species in Pakistan.