Taprooted annual 1–10 dm; herbage glabrous or puberulent; basal lvs petiolate, with lanceolate to oblanceolate, acute, denticulate to pinnately parted blade to 15 × 4 cm; cauline lvs sessile, auriculate, mostly linear or nearly so; heads several; invol 6–9 mm; inner bracts 12–15, tomentose-puberulent and sometimes also glandular-hispid outside, strigose or puberulent within; outer bracts subulate, a third as long as the inner; fls 30–70; receptacle very finely ciliate; achenes 2.5–4.5 mm, dark purplish-brown at maturity, fusiform, rather strongly attenuate but scarcely beaked, 10-ribbed, the ribs roughened; 2n=8. Native of Eurasia, sparingly established here and there in our range. June, July.
Rocky and sandy ground by rivers and the sea. Forest margins, grassland in valleys, fields and wastelands at elevations of 900-1800 metres in N. China.
Home