Herbs, perennial, 100 cm tall or more, gray and yellowish villous and tomentose. Middle stem leaves: petiole 3-5 mm; leaf blade oblong-ovate or elliptic, 6-8 × 3.5-4.5 cm, sparsely arachnoid pubescent and gland-dotted adaxially, densely gray arachnoid tomentose, 2-pinnatisect; segments (4 or)5 or 6 pairs, elliptic; lobules 2 or 3 pairs or deeply serrate; distal lobules longer, 5-12 × 2-4 mm; rachis narrowly winged. Uppermost leaves 1-or 2-pinnatipartite; leaflike bracts pinnatipartite, 3-partite, or entire. Capitula in broad, much-branched panicles, oblong or oblong-ovoid, 1.5-2 mm in diam. Phyllaries sparsely arachnoid pubescent. Marginal female florets 2-5. Disk florets 4-8, bisexual. Achene obovoid. Fl. and fr. Aug-Oct.
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