Stem erect, 35-50(-75) cm tall, 3-4 mm in diam. at base, proximally glabrous, distally shortly yellowish brown pilose. Basal leaves petiolate; petiole 8-15 cm, base sheathed, abaxially glabrous, adaxially shortly pilose; leaf blade triangular-sagittate or cordate, 3-10.5 × 4.5-9 cm, both surfaces shortly white pilose, later adaxial hairs deciduous, glabrescent, palmately veined, margin regularly denticulate, apex acute; sinus ca. 1/3 as long as leaf blade, broad; basal lobes short, slightly divergent, outer margin coarsely dentate. Middle stem leaf solitary, subsessile; sheath enlarged, 3-5 cm, margin entire; leaf blade ovate or ovate-cordate, 3-4 × 3.5-5 cm. Distalmost stem leaves sessile, bracteal, ovate-lanceolate. Synflorescence racemose, 7-13 cm; leaflike bracts linear, 1-1.5 cm, submembranous, shortly pilose, margin entire; peduncles 1.5-2.5 cm, shortly pilose. Capitula numerous; supplementary bracts linear. Involucre campanulate, 9-11 × 7-9 mm, outside shortly white pilose; phyllaries 7 or 8, in 2 rows, oblong or lanceolate, 2-3 mm wide, apex obtuse or acuminate; inner phyllaries brown membranous at margin. Ray florets 5 or 6, yellow; lamina linear, to 20 × 1.5 mm; tube 5-6 mm. Tubular florets 8-9 mm; tube as long as limb. Pappus yellowish brown, as long as tube of tubular corolla. Fl. Jul-Sep.
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