''Pinguicula vulgaris'', the common butterwort, is a perennial carnivorous plant in the Lentibulariaceae family. It grows to a height of 3–16 cm, and is topped with a purple, and occasionally white, flower that is 15 mm or longer, and shaped like a funnel. This butterwort grows in damp environs such as bogs and swamps, in low or subalpine elevations. It has a generally circumboreal distribution, being native to almost every country in Europe as well as Russia, Canada, and the United States. Being native to environments with cold winters, they produce a winter-resting bud during the winter. There are three forms originating from Europe: ''P. vulgaris'' f. ''bicolor'' which has petals that are white and purple; ''P. vulgaris'' f. ''albida'' which has all white petals; and ''P. vulgaris'' f. ''alpicola'' which has unusually large flowers.