Herbs 50-150 cm tall, biennial. Stem erect, branched from middle third, glabrous. Basal and lower cauline leaves linear to lanceolate, 15-40 × 0.5-1 cm. Capitula few to 10(-12); peduncle inflated under capitulum, 5-10 mm in diam. Involucre 3.5-5(-6) cm. Phyllaries 8-10(-12), smaller than florets and achenes with pappus. Ligules yellow. Outer achenes 2-2.3 cm; body pale brown, slightly curviform or straight, 2-2.5 mm in diam., tuberculate, with 5 fairly well-differentiated ribs; beak 2-5 mm, attenuate or stout, with inflated apex; pappus disk floccose. Pappus dirty white, 2-2.7 cm. Fl. and fr. May-Jul.
Home