Stems erect, 50-90 cm tall, simple, glabrous. Lower leaves shed by anthesis; median stem leaves petiolate; petiole 3-4 cm, shorter in upper leaves, sparsely puberulent to subglabrous; blade broadly ovate, 6-12 × 3-12 cm, membranous, abaxially sparsely puberulent, adaxially minutely pubescent, deeply pinnatisect with 3 or 4 lateral lobes on each side; lateral lobes subopposite, oblong-lanceolate or lanceolate, apex acute or acuminate, coarsely and irregularly 3-5-dentate, teeth mucronate; terminal lobe subequaling lateral ones. Capitula 5-9 in terminal subumbelliform corymbs, 1.5-2 cm across ray florets; peduncles 0.8-1.8 cm, slender, sparsely glandular. Involucres campanulate, 5-6 × ca. 3 mm; phyllaries 6-8, subuniseriate, ovate-oblong, ca. 5 × 1.2-2 mm, herbaceous, externally minutely puberulent, with puberulent tips and pale brown scarious margins, apex obtuse or acuminate. Ray florets 5-9; corolla tube ca. 2.7 mm; lamina linear or oblong-linear, ca. 8 × 1-1.5 mm, 5-veined, apically shortly 2-dentate. Disk florets many; corolla yellow, 4-4.5 mm, with tube 2-2.5 mm and campanulate limb; lobes 5, equal, ovate-triangular, ca. 1.5 mm. Anthers 1-1.5 mm, obtuse to rounded at base. Style branches 0.7-0.8 mm. Achenes narrowly cylindric, ca. 2 mm, glabrous. Pappus persistent, ca. 4 mm. Fl. Aug-Nov.
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