Herbs, perennial, 0.5-2 m tall. Taproots clavate, up to 3.5 cm in diam. Stems branched, usually 6-ridged, ridges sparsely spiny. Basal leaves rosulate, often wilted at anthesis, long petiolate; leaf blade elliptic, 5-13 × ca. 3.5 cm, undivided, margin serrate, or 3- or 5-segmented; terminal segment much larger; cauline leaves subsessile or with petiole up to 7 cm; leaf blade broadly lanceolate, 10-22 × 3.5-7 cm, trifid or pinnatifid; lateral segments in 2 or 3 pairs; terminal segment larger, ovate, all segments yellowish hirsute on both surfaces, margins serrate. Capitula 1 or 3, 2-3.5 cm in diam. at anthesis and in fruit; peduncles up to 40 cm; involucral bracts linear, white hirsute; bracts lanceolate or obovate-lanceolate, 14-20 mm at anthesis, rostrum 5-9 mm, setose and hirsute; involucels ovoid-columnar, 5-8 mm. Corolla white or yellowish, funnelform, 11-15 mm; tube 3.5-4 mm; lobes unequal. Stamens exserted. Style strongly exserted. Achenes narrowly ellipsoid, ca. 4.5 × 1.5 mm, 4-angular, glabrous. Fl. Jul-Aug, fr. Aug-Oct.