Plants 10-60(-120) cm. Rhizomes much branched, creeping, often forming long-lived, spreading clones. Basal leaves: blades mostly reniform, orbiculate-cordate, cordate, ovate, triangular, or sagittate, margins subentire to coarsely dentate to wavy, or shallowly to deeply pinnipalmately or palmately lobed, lobes obtuse to acute, often again lobed or toothed, abaxial faces densely white-tomentose to lanate, adaxial faces densely lanate or floccose, glabrescent, or glabrous. Staminate heads 2-53 (ray florets: 0 or 1-70, styliferous and sterile, corolla laminae 1.1-12 mm; disc florets 11-78, functionally staminate; style branches 0-2.3 mm, papillate or hairy). Pistillate heads 5-60 (ray florets 30-139, pistillate and fertile, corolla laminae 0.6-6.3 mm; disc florets 1-12, functionally staminate, style branches 0-2.3 mm, papillate or hairy). Phyllaries: staminate 3.6-12.8 × 1-4.4 mm, pistillate 1-9.5 × 0.7-3.3 mm, margins entire or serrate. Cypselae 1.7-3.5 mm; pappi (longest, pistillate heads) 7-17.3 mm.