Herbs, perennial, 70-100 cm tall. Stems erect, thick, strigose or ± glabrescent in lower part, stipitate glandular below capitula, spreading branched from middle. Leaves abaxially pale green, both surfaces scabrous, thin, midvein abaxially prominent; (lower leaves not seen); middle leaves shortly petiolate; blade ovate to ovate-lanceolate, 7-11 × 3-5.5 cm, base attenuate, margin serrate, apex acute to acuminate; upper leaves sessile, small, finely serrate or subentire. Capitula solitary at ends of branches or long peduncles, in open corymbiform synflorescences, 3-4 cm in diam.; peduncles 3-4 cm; bracts densely scabrous, glandular. Involucres hemispheric, 6-7 mm, 12-15 mm in diam.; phyllaries 2-or 3-seriate; outer phyllaries leaflike, subequal, shorter to slightly longer than inner phyllaries, ca. 5.1 × 1-1.5 mm, densely scabrous, margin scabrous, apex acuminate; most inner phyllaries membranous, narrower, sparsely scabrous or glabrate, margin narrowly scarious. Ray florets 10-20, white, tube 0.7-1 mm, hairy (not seen), lamina oblong-linear, ca. 15 × 2-2.5 mm; disk florets ca. 3.7 mm, tube 1.1-1.5 mm, hairy, limb campanulate, lobes lanceolate, 1-1.2 mm, recurved. Achenes brown, obovoid, slightly compressed, trigonous, 3.5-4 mm, strigose, 3-ribbed. Pappus 1-seriate, dirty white, of unequal, rigid bristles 1-1.5(-2) mm. Fl. May-Sep, fr. Aug-Oct.
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