Stem erect, ca. 50 cm tall, ca. 6 mm in diam. at base, densely white arachnoid-puberulent. Basal leaves petiolate; petiole to 23 cm, white arachnoid-puberulent, base sheathed; leaf blade triangular or ovate, 19.5-24 × ca. 16 cm, abaxially grayish white arachnoid-puberulent, adaxially glabrous, pinnately veined, base subtruncate, margin regularly denticulate, apex obtuse. Proximal stem leaves scalelike, ovate, ca. 3 cm, middle to distally grayish white puberulent. Middle stem leaves sessile, similar but smaller. Distalmost stem leaves sagittate or ovate-lanceolate, including petiole to 8 cm, base cuneate, narrowed into a broadly winged petiole, margin minutely denticulate, apex caudate-acuminate. Synflorescence racemose, 9-25 cm, clustered or lax, proximal capitula often undeveloped; leaflike and supplementary bracts linear; peduncles ca. 1 cm, white puberulent. Capitula numerous. Involucre broadly and shallowly campanulate, 7-12 mm, mouth to 1.2 cm in diam., outside grayish white puberulent; phyllaries 8 or 9, in 2 rows, linear-oblong, ca. 2 mm wide. Ray florets 7, yellow; lamina oblong, 10-13 × 3-5 mm, apex obtuse; tube ca. 3 mm. Tubular florets numerous, ca. 7 mm; tube ca. 2 mm; limb narrow, base cuneate. Achenes yellowish, cylindric, 4.5-6 mm. Pappus white, as long as tubular corolla. Fl. and fr. Apr-Sep.
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