Herbs, perennial. Stems flexuous, crisp pubescent, ca. 1 m tall, branch thickened below capitula. Leaves radical and cauline; radical leaves withering before flowering; lower cauline leaves winged petiolate, broadly ovate, 30-40 × 10-13 cm, shortly pubescent on both surfaces especially on veins, margin irregularly coarsely doubly toothed, apex acute; median leaves gradually smaller, obovate-oblong, abruptly narrowed in lower half, apex acute; upper leaves narrow, apex acuminate. Capitula terminal, on long peduncles; bracts linear or lanceolate. Involucre cupuliform, 8-10 × 23-30 mm; phyllaries 4-seriate, outer ones similar to bracteal leaves, median oblong-linear, densely pubescent, acute, inner linear-spatulate, 5.5-6 mm. Marginal florets many seriate, corolla tubular, ca. 3.5 mm, 5-lobed; disk corolla ca. 4 mm, 5-lobed. Achenes cylindric, 5.5-6 mm, beak ca. 1 mm, gland-dotted. Fl. Jul-Sep, fr. Sep-Oct. 2n = 40.
Home