Stem erect, 60-200 cm tall, 4-9 mm in diam. at base, proximally glabrous, distally and synflorescence white arachnoid-puberulent and shortly yellowish brown pilose, later white arachnoid hairs deciduous. Basal leaves petiolate; petiole 15-104 cm, solid, base narrowly sheathed; leaf blade triangular-or ovate-cordate, sometimes subreniform, 7-24 × 12-35 cm, glabrous, or abaxially shortly white pilose along veins, palmately veined, base subhastate, margin regularly sharply dentate, apex rounded or obtuse; sinus ca. 1/3 as long as leaf blade, broad; basal lobes oblong or suborbicular, divergent. Middle to distal stem leaves similar but smaller, shortly petiolate to sessile; sheath enlarged, margin entire. Synflorescence racemose, 13-40 cm; leaflike bracts at middle of peduncle, surrounding involucre, pale reddish brown when dry, broadly ovate to ovate-lanceolate, 8-30 × to 20 mm, smaller distally, submembranous, glabrous, margin entire or middle to distal half dentate, apex long acuminate; peduncles 5-35 mm. Capitula numerous; supplementary bracts narrowly lanceolate to linear. Involucre campanulate or tubular-campanulate, 8-10(-15) × 5-8 mm, outside shortly pilose; phyllaries 7-9, in 2 rows, oblong, 2-3 mm wide, apex acute; inner phyllaries membranous at margin. Ray florets 6-10, yellow; lamina narrowly oblanceolate, 1.3-2.5 cm × ca. 2 mm, apex rounded; tube 5-11 mm. Tubular florets numerous, 9-15 mm; tube 5-8 mm. Pappus yellowish white, sometimes dirty white, ca. 1/2 as long as or equal to tube of tubular corolla. Fl. Jul-Sep, fr. Aug-Sep.
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A herb. It grows 60-200 cm tall. It has white hairs near the top. The leaves at the base have leaf stalks 15-104 cm long. The leaves are triangle or heart shaped and 7-24 cm long by 12-35 cm wide. There are white hairs along the veins underneath. Leaves higher up the stem are smaller.
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