Stem erect, to 100 cm tall, 3-5 mm in diam. at base, proximally glabrous, distally and synflorescence white arachnoid-puberulent and shortly yellow pilose. Basal leaves petiolate; petiole 10-30 cm, slender, base narrowly sheathed; leaf blade reniform or cordate-reniform, (2-)5-8 × 4.5-13 cm, thick, glabrous, with palmate veins and conspicuous reticulate veins, base cordate, margin triangular-dentate or crenate and ciliate between teeth, apex rounded. Middle to distal stem leaves few, shortly petiolate or sessile, base broadly sheathed; leaf blade reniform, smaller than lower leaves. Capitula 1 to many, solitary or in corymb or compound corymb, branches 6-12 cm, fasciated; leaflike bracts navicular, 2-3 × ca. 1 cm; peduncles 0.5-2.5 cm; supplementary bracts linear-subulate, shorter than involucre. Involucre broadly campanulate, longer than broad, 10-14 × 7-10 mm, outside glabrous or white arachnoid-puberulent, base truncate or rounded; phyllaries 8 or 9, closely imbricate, purplish red, oblong, 3-4 mm wide, brown ciliate, apex broadly triangular, sometimes mucronate; inner phyllaries 2-carinate on convex outside, margin broadly membranous. Ray florets yellow; lamina oblong, 15-25 × to 6 mm wide, apex obtuse and denticulate; tube ca. 4 mm. Tubular florets numerous, extending from involucre, 9-10 mm; tube 2-3 mm. Achenes cylindric, 7-8 mm, ribbed. Pappus reddish brown, as long as tubular corolla. Fl. and fr. Jul-Oct. 2n = 58.
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A herb. It grows 1 m tall. The leaves are kidney shaped and 5-8 cm long by 5-13 cm wide. There are triangle shaped teeth along the edge. Most leaves are near the base.
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