Herbs, perennial, 80-100 cm or more tall, pubescent. Leaves white gland-dotted and sparsely pubescent adaxially, densely gray arachnoid pubescent abaxially. Middle stem leaves: petiole 1.5-3 cm; leaf blade broadly ovate or ovate, 6-8 × 5-8 cm, 2(or 3)-pinnatisect; segments 4 or 5 pairs, subrhombic or ovate-elliptic, 3-4 × 1.5-2.5 cm, parted; lobules elliptic, linear-lanceolate, or lanceolate, 10-25 × 3-5 mm, obtuse apically; rachis winged. Upper leaves and leaflike bracts pinnatisect or 3-5-lobed. Capitula in broad panicles, many, subglobose or ovoid, 1-2 mm in diam., nodding. Phyllaries sparsely pubescent. Marginal female florets 5 or 6. Disk florets 6-8, bisexual. Achenes oblong or obovoid. Fl. and fr. Sep-Dec.
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