Rhizomes slender, with many fibrous roots. Stem solitary, erect, striate, 40-75 cm tall, arachnoid or gradually glabrescent. Leaves usually crowded at middle part; petiole 6.5-8 cm, broadly or narrowly winged; blade thinly papery; median leaves broadly cordate, 8-10 × 10-12.5 cm, abaxially sparsely arachnoid on veins, later ± glabrescent, adaxially sparsely pubescent, base 3-veined, lateral veins furcate, veins prominent on both surfaces, base cordate, margin irregularly sharply serrate, teeth mucronulate, apex shortly acute or caudate-acuminate. Upper leaves smaller; petiole 3.5-5 cm, narrowly winged, not expanded at base. Capitula numerous, usually arranged in terminal racemes or branched in lower part, to 17 cm; peduncles 3-7 mm, slender, arachnoid and densely shortly glandular hairy, with 2 linear or linear-lanceolate bractlets. Involucres cylindric or narrowly campanulate, 9-11 × ca. 1.5 mm; phyllaries 3, linear-lanceolate, arachnoid or subglabrous, margin scarious, apically obtuse. Florets 3; corolla yellow, 6-7 mm; limb broadly tubular; lobes lanceolate. Anthers exserted from corolla, ca. 4 mm, basally caudate. Style branches excurved, truncate, papillose. Achenes brown, cylindric, 3-4 mm, glabrous, ribbed. Pappus white, 6-7 mm. Fl. Jun-Jul, fr. Aug.
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