Stoloniferous perennial. Leaves with petioles 4–25 cm long; lamina trifoliolate, sometimes appearing digitate due to deep division of lateral segments, 1.5–5 cm long and wide; segments cuneate to narrow elliptic, 2–6 (–12) mm wide, each with 3–5 lobes or teeth, rarely entire, glabrous or with a few scattered hairs above, sparingly pilose below. Flowering stems 10–30 cm long, erect, 2–4-flowered, ± pilose under flowers and glabrescent below. Sepals 5 (6), spreading, ovate to oblong, ± 5 mm long, ± shortly hispid below, rarely glabrous. Petals 5–15, elliptic to oblanceolate, 7–12 mm long, 2–4 mm wide, yellow; nectary near petal-base, ± 0.5 mm long, pocket-like, with apex emarginate or truncate, or a short rounded lobe developed. Stamens 15–40. Pistils 20–50. Receptacle sparsely hispid in achene zone. Achenes obliquely obovoid to broadly cuneoid, 1.7–3.6 mm long; lateral faces smooth, irregularly warty or undulate; beak slender, erect to reflexed, 0.8–2.4 mm long.
Grows in pools, along rivers and lakes, and in other low-lying areas prone to inundation, on a range of soils from silts to clays.
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