Annual to biennial glabrous, up to 1.7 m tall herb with tap root. Basal leaves large, obovate, 25 – 35 cm long, 10 – 20 cm wide, entire to runcinate, obtuse to subacute, slightly puberulous to glabrous; cauline leaves akin to basal, gradually smaller upwards.Capitula solitary or in clusters of 4-6, sessile or on up to 15(-20) cm long, apically thickened peduncles.Involucre 3.5 – 5 mm wide. Outer phyllaries ovate to ovate-lanceolate or elliptic-lanceolate, 7 – 10 mm long, 2 – 5 mm wide , ±entire, basal part fleshy, the upper acute to acuminate part reflexed; inner phyllaries slightly reflexed after anthesis and longer than outer ones. Florets 15 – 20, ligules 10 – 18 mm long, 2.5 – 4 mm wide, bluish to whitish, 12-33 mm long. Styles. 6.5 – 10 mm long, blue. Cypselas obovoid to cylindrical, 2.5 – 3.5 mm long, 1 – 1.5 mm wide, light brown. Pappus scales in 1-3 rows, erect to erecto-patent, irregularly shaped, (0.4-) 0.6 – 0,8 mm long, pappus of inner cypselas with 0.5 – 1.5 mm long scales.