Plants matted or tufted, green to grayish. Stems decumbent to erect, (1–)2–6(–7.5) dm, hairs ascending to appressed, sometimes spreading. Basal leaves planar, (5–)10–30 × 1.5–4(–5) cm; stipules entire or basally lobed; leaflets 5–12 per side, separate to slightly overlapping, ± elliptic to obovate or oblanceolate, 5–25(–30) × 5–15(–25) mm, ± 1/2 to nearly as wide as long, divided less than 1/3 to midrib into (5–)10–15 oblanceolate to obovate teeth, sparsely pilose to glabrate or sericeous. Cauline leaves 1–3(–5). Inflorescences ± open to congested, flowers arranged individually and/or in glomerules. Pedicels 1–30(–40) mm. Flowers 12–17 mm diam.; epicalyx bractlets lanceolate to ovate, 3–5 × 1.5–3 mm, 2/3–3/4 length of sepals, entire; hypanthium 1.5–2 × 4–7 mm, less than 1/2 as deep as wide, interior glabrous or pilose in a narrow ring; sepals ± reflexed to spreading, lanceolate, 4–6.5 mm; petals oblanceolate to narrowly obovate, 4–8 × 1.5–4 mm, apex obtuse to rounded; filaments 1–3 × 0.5–2 mm, anthers 0.7–1.1 mm; carpels (30–)40–60(–80); styles 2–3 mm. Achenes brown, 1.5–1.8 mm, smooth or minutely rugose.
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