Herbs, perennial, 90-200 cm tall, glandular pubescent. Lower and middle stem leaves ± sessile; leaf blade ovate, oblong-ovate, or elliptic-ovate, 11-14 × 8-10 cm, gray pubescent or glabrescent, adaxially and veins abaxially sparsely glandular pubescent, 1-or 2-pinnatipartite or partly-sect; segments 3(or 4) pairs, elliptic or elliptic-lanceolate, 50-55 × 20-25 mm, distal lobe longer than lateral lobes, 5.5-6.5 mm, margin prominently 2 or 3 toothed, apex acuminate; rachis serrately winged. Uppermost leaves and leaflike bracts 3-5-partite, distal lobes longer. Synflorescence a lax, leafy, conical panicle; branches slender, ca. as long as subtending bract. Capitula sessile to shortly pedunculate, secund. Involucre hemispheric or broadly ovoid, 2.5-3 mm in diam.; phyllaries glabrescent. Marginal female florets 7 or 8. Disk florets 15-17, bisexual. Achenes oblong or ovoid. Fl. and fr. Jul-Oct.
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