Annual, biennial or perennial herbs, sometimes shrubs, rarely trees, tissues sometimes containing milky sap, glabrous, pubescent, tomentose, spinous or variously sessile- or stipitate-glandular. Leaves alternate or sometimes opposite, exstipulate (but sometimes with stipuliform appendages), entire, toothed, lobed or variously dissected. Individual flowers usually numerous, aggregated and ± sessile (briefly immersed to very shortly stipitate) on a common receptacle and surrunded by an involucre of 1-many series of phyllaries (involucral bracts),the whole comprising a capitulum; phyllaries free, rarely connate; capitula solitary to very many, rarely agreegrated into secondary capitulum-like glomerules.Receptable sometimes bearing paleae (scales), hairs or bristles.Flowers (florets)epigynous, bisexual, female, m ale(at least functionally so) or neuter (sterile). Calyx absent, often replaced on apex of ovary by a pappus of 1 or more series of bristles and / orscales. Corolla gamopetalous, tabular throughout or dilated or 1(-2)-lipped above,variously truncate or 1-5-toothed at apex (appices); rarely corolla absent. Stamens (1-)5, epipetalous, filaments free anthers laterally connate into a cylinder around style (free in one species). Ovary inferior, 1-celled with one basal ovule; style usually divided above into two branches, sometimes entire on male flowers, emerging through anther cylinder, first collecting and exposing pollen,later exposing stigmatic surfaces if bisexual. Fruit an achene (cypsela) usually bearing a persistent or deciduous pappus; pappus sessile or borne on a beak(rostrum).
Perennial herbs.Leaves alternate,simple and repand to pinnate.Capitula ligulate,many-flowered,solitary at branch ends or corymbose to racemose,erect or pendent.Involucre campanulate,imbricate.Corollas yellow,pink or purplish.style branches filiform. Achenes oblong,a little compressed, striate, gradually narrowed above.Pappus several-seriate, capillary.
Stems 10-50cm,hirsute at least above,borne on long slender rhizomes.Leaves acuminate,denticulate;lower leaves simple to lyrate-pinnatifid(-pinnatisect) with 1-4 pairs of rounded (angular) lateral lobes,blade lanceolate or oblanceolate in outline,7-12 x 2-5cm, sessile and auriculate or on petiole to 15cm;upper leaves ovate to linear-lanceolate,to 10 x 4cm, sessile. Inflorescence ± corymbose,with 1-15 capitula. Capitula(6-)8-15mm across,cernuous;peduncles up to 10(-20)cm,blackish hirsute.Phyllaries lanceolate,8-20 x 2-5mm,blackish hirsute.Corolla tube 9mm;ligules yellow,13 x 2.5mm.Achenes brown,9.5mm;pappus dirty white,10mm.