Tufted perennial; roots fleshy-fibrous; rootstock thick, erect or creeping. Leaves with petioles 2.5–20 cm long, ± sericeous at base; lamina ± ovate in outline, 1.5–6 cm long, 2–3-times pinnately divided into few-many subterete sulcate or linear to linear-lanceolate segments, often subfasciculate, mostly c. 1 mm diam., with scattered long hairs or glabrescent, each with a small terminal hydathode. Flowering stems 1-flowered, 5–25 cm high, sparsely pilose to villous. Sepals 5–7, spreading, obovate to oblong, 6–15 mm long, glabrous or pilose beneath, usually tinged purple. Petals 5–13, narrow-elliptic or obovate, 10–25 mm long, shining golden-yellow, pale purple below; nectaries near petal-base, lobeless, in shallow pits or superficial, 3 (–7) per petal. Stamens c. 40–75. Pistils c. 20–60. Receptacle glabrous. Achenes obovoid-oblong, c. 2.5 mm long, plump, smooth; beak ± straight, 1–1.5 mm long.
Grows in bogs, herbfields, damp grass-land and, occasionally, subalpine woodland.
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