Herbs, perennial, 100-150 cm tall, sparsely glandular pubescent and eglandular pubescent. Lower and middle stem leaves: petiole 3-10 mm; leaf blade ovate or ovate-oblong, 5-6 × 3.5-4.5 cm, abaxially sparsely glandular pubescent and densely gray arachnoid tomentose, sometimes glabrescent, adaxially sparsely puberulent, densely glandular pubescent, pinnatisect; segments 3 or 4(-6) pairs, linear-lanceolate or elliptic-lanceolate, 15-20 × 5-10 mm, apex acuminate and mucronulate. Uppermost leaves and leaflike bracts pinnatipartite, 3-partite, or entire. Synflorescence a broad and elongated panicle. Capitula nodding. Involucre ovoid-campanulate, 1.5-2 mm in diam.; phyllaries sparsely puberulent. Marginal female florets 3-5. Disk florets 4-7, bisexual. Achenes obovoid. Fl. and fr. Aug-Oct.
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