Pinguicula vulgaris

"A perennial, carniverous plant with low-growing, pale yellow-green leaves which form a star-shaped rosette and excrete a sticky substance to attract and capture prey, curling up to keep the prey inside. Bright purple, funnel-shaped flowers with a speckled white interior appear from May to July. Thrives in damp and boggy locations."

https://www.rhs.org.uk/plants/13046/pinguicula-vulgaris/details