Plants grayish green. Stem erect, 50-200 cm tall, 2.5-7 mm in diam. at base, glabrous. Basal leaves petiolate; leaf blade broadly ovate or oblong, 10-30 × 5-22 cm, glabrous, pinnately veined, base rounded, margin irregularly undulately dentate, apex obtuse or acute. Middle to distal stem leaves shortly petiolate or sessile, oblong or ovate-oblong, to 13 × 4 cm, smaller distally. Synflorescence racemose, 6-13(-18) cm; peduncles 3-15 cm; leaflike and supplementary bracts smaller. Capitula numerous. Involucre campanulate, 6-7 × ca. 5 mm, outside glabrous; phyllaries united, apex 2-5-dentate, tips of teeth acute or rounded. Ray florets 2-6, yellow; lamina oblong, 1.3-2.2 cm × 2-6 mm, apex acute; tube 4-5 mm. Tubular florets numerous, 7-10 mm; tube 2-3 mm. Achenes brown, cylindric, 7-8 mm. Pappus reddish brown, as long as tube of tubular corolla. Fl. and fr. Jun-Sep.
Home