Herbaceous hemicryptophytes, woody chamaephytes, intermediate woody hemicryptophytes/phanerophytes or woody nanophanerophytes. Stems branched, cylindrical, ribbed. Leaves petiolate (or rarely sessile in P. tussilaginis); lamina palmately veined, green or light brown to purple; margins denticulate to dentate or lobed, rarely entire, margin teeth, where present, with purplish callosities at the apex; abaxial surface pubescent or rarely glabrous; adaxial surface glabrous to pubescent. Petioles ribbed sometimes appendiculate, often auriculate. Inflorescence terminal, branched corymbose cymes, rarely solitary. Capitula urceolate to campanulate, heterogamous, radiate. Involucre ecalyculate, uniseriate; phyllary bracts glabrous or with echinules; margin scarious; base sessile; apex acute, recurved and finely ciliate. Ray florets female, ligulate; ligules upper epidermis papillate, 3-5 toothed, white, cream, flesh coloured, pink, purple or violet. Disc florets bisexual, white, cream, pink, purple or violet, (never yellow), tubes tubulate to infundibuliform with 5 lobes. Anthers united, crowned by an oblong, blunt, membranous appendage; filament collar dilated. Style slender, filiform, smooth, swollen at the base; ray floret style branches recurved, glabrous; disc floret style branches recurved with a truncate papillose apex. Cypsela light to dark brown, elliptic, cylindrical or oblong, often compressed, typically with longitudinal ridges; furrows between the ridges glabrous to pubescent. Pappus white or yellow, scabrous, with acutely tipped decurrent spines, sometimes absent from the ray florets.