Ranunculus flammula subsp. flammula

Creeping, stoloniferous or rhizomatous perennial to c. 60 cm high. Leaves mostly cauline, sparsely appressed-hairy; petioles of lower leaves to c. 10 cm long, upper leaves mainly sessile; lamina ovate to narrowly elliptic, 1–12 cm long, 2–12 mm wide; margins entire or obscurely toothed. Flowers several in loose terminal cymes; sepals (4–)5, spreading, ovate to obovate, 2–4 mm long, appressed-hairy on back; petals 5, obovate, 4–7 mm long, 2–5 mm wide, yellow; nectary lobe cuneate, truncate, c. 0.2 mm long, fused with petal along both sides; stamens c. 20; achenes 10–40, obovate, 1.5–2 mm long, the convex faces minutely pitted, otherwise smooth; beak minute; receptacle glabrous.  Flowers most of year.