Rhizomes short, not tuberous, with numerous fibrous roots. Stem solitary, erect, green, striate, 60-90 cm tall, rather stout, 7-8 mm in diam., simple or branched on synflorescences, scattered glandular hairy in upper part, subglabrous in lower part. Radical leaves often withered by anthesis. Median stem leaves sessile, ovate-oblong, 4-7 × 2.5-3 cm, membranous, both surfaces scattered adpressed glandular pubescent, especially on veins, base dilated, cordate, semiamplexicaul, margin rounded finely toothed or subentire, apex obtuse or rather acute. Upper stem leaves ovate or ovate-lanceolate, 2.5-4 × 1.5-2 cm, both surfaces sparsely shortly glandular hairy, base cordate, semiamplexicaul, apex acuminate. Capitula 3 or 4 in axillary racemes, with ray florets 2-2.5 cm in diam.; peduncles 3-8 cm, glandular pubescent, apically obconically dilated. Involucres hemispheric, 10-13 × 15-20 mm; phyllaries 2-or 3-seriate; outer phyllaries narrowly lanceolate, 1.5-2 mm wide, abaxially glandular pubescent in lower half, glabrous or subglabrous in upper part, margin long ciliate; inner phyllaries linear-lanceolate or linear, 0.5-0.8 mm wide, ciliate; all phyllaries long acuminate, equal to disk or rather shorter than disk. Ray florets yellow, 8-10 mm with 2.5-3 mm tube, glabrous; lamina oblong or oblong-elliptic, 7-8 × ca. 2 mm, 4-veined, apically 2-or 3-denticulate. Disk florets numerous; corolla yellow-green, 3.4-4 mm, with ca. 2.5 mm tube and campanulate-funnelform limb, lobes ovate-triangular; anthers linear, 1-1.2 mm, basally obtuse; style branches short, obtuse or truncate. Achenes heteromorphic, brown, obconic-oblong, 2.5-3 mm, 10-ribbed; marginal achenes glabrous, without pappus; achenes in disk florets densely white hairy, pappus pallid-yellow, 3-3.5 mm, scabrid. Fl. Jul-Sep.
Home