Subshrubs, (7-)10-40(-80) cm tall, caespitose, with woody basal parts and branches, much branched, densely pubescent, or glabrescent except on leaves. Middle stem leaves: petiole 8-13 mm. Lower and middle stem leaves; leaf blade ovate or triangular-ovate, 2-4 × 1-2 cm, gland-dotted, gray or yellowish arachnoid pubescent, 2-4-pinnatisect; segments 4 or 5 pairs; lobules pectinately linear or linear-lanceolate, usually serrulate, teeth 1-2 × 0.2-0.5 mm. Uppermost leaves 1-or 2-pinnatisect and leaflike bracts divided or entire; bracts lanceolate or linear-lanceolate. Synflorescence a leafy, narrowly conical panicle, 20-40 × 5-12 cm; primary branches ascending, 5-10 cm. Capitula many, shortly pedunculate or ± sessile, nodding, remote or approximate toward branch apices. Involucre globose, 3-5(-6) mm in diam.; outer phyllaries linear-oblong, green, not scarious margined, sparsely arachnoid. Marginal female florets 10-12; corolla slender, glandular, 2-toothed. Disk florets 40-60, glabrous. Achenes brown, oblong, ca. 1 mm. Fl. and fr. Aug-Oct. 2n = 18, 54.
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