Herbs 40-80(-100) cm tall, biennial. Stem simple or branched from lower or middle third, erect, glabrous. Basal and lower cauline leaves linear to lanceolate, 15-30 × 0.3-0.5 cm. Capitula solitary to few; peduncle inflated, 7-11 mm in diam. Involucre 4-5.5 cm. Phyllaries (5-)7 or 8, longer than florets, equaling or longer than achenes with pappus. Ligules yellow. Outer achenes 2.4-3 cm; body pale brown, ± curviform, (1.5-)1.7-2 mm in diam., with 5 fairly well-differentiated ribs, tuberculate; beak whitish, 1-1.7 cm, slender, non-tuberculate or toothed, apically ± inflated; pappus disk ± pubescent. Pappus dirty white, 2.2-3 cm. Fl. and fr. Apr-Jun.
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