Perennial with up to 1 m tall, glabrous or ± hairy, simple or much branched shoots from ascending or horizontally creeping rhizome. Leaves, especially basal and median, long petioled, green-glaucous, obovate-spathulate to oblong-obovate, (1.5-) 2.5-10 (-15) cm long, basally cuneate, entire, crenate, obtusely toothed or deeply pinnatifid, upper stem leaves sessile. Capitula long-peduncled, radiate or discoid, (2-) 2.5-5 cm across, solitary or 2-6 (-10), in lax corymbs. Involucre saucer-shaped, 1-2 cm in diam., phyllaries ovate-oblong to lanceolate, 5-8 mm long, light to dark membranous margined, inner ones with wide apical appendage. Ray-florets, in radiate forms, 12-30, female, fertile, tube winged with 10-25 mm long, white ligules. Disc-florets and marginal florets in discoid capitula bisexual, yellow, 2.5-3 mm long, teeth deltoid, acute. Cypselas variable in size, 2-3 mm long, 10-ribbed. Pappus absent in disc-cypselas, present in ray-cypselas as unilateral, c. 0.3-0.5 mm long auricle.