Stem erect, to 100 cm tall, 2-4 mm in diam. at base, slender, glabrous. Basal leaves petiolate; petiole to 25 cm, slender, glabrous, base narrowly sheathed; leaf blade hastate or triangular, 1.7-3.5 × 2-5.5 cm, glabrous, palmately veined, base truncate or rarely shallowly cordate, margin revolute, obtusely denticulate, apex obtuse or rounded, mucronate. Middle to distal stem leaves 2-4, shortly petiolate or sessile; sheath enlarged amplexicaul; leaf blade smaller, triangular to lanceolate. Synflorescence racemose, 8-15 cm; leaflike and supplementary bracts narrowly linear, 5-20 mm; peduncles 5-55 mm, slender, smaller distally. Capitula 3-6. Involucre campanulate, 1-1.3 × to 1 cm, outside glabrous; phyllaries 7-10, in 2 rows, oblong, 2-3 mm wide, apex acute; inner phyllaries membranous at margin. Ray florets 5-8, yellow; lamina oblong, 1.2-2 × to 5 mm, apex obtuse; tube to 1 cm. Tubular florets numerous, 8-11 mm; tube 4-7 mm, slender; limb ca. 2 mm wide. Pappus rufous, 6-8 mm, shorter than tubular corolla. Fl. Jul.
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