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common name for several species of the plant genus Pinguicula of the north temperate zone and the mountains of tropical America. It is a member of the family Lentibulariaceae (bladderwortbladderwort
, any plant of the genus Utricularia, insectivorous or carnivorous aquatic plants, many native to North America. Small animals are caught and digested in bladderlike organs of the finely divided submerged leaves.
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(Pinguicula), a genus of perennial insectivorous plants of the family Lentibulariaceae. The leaves are in a basal rosette and are usually elliptical. They are covered by glandular hairs which secrete a mucilage that traps small insects and a sap containing proteolytic enzymes that dissolve the proteins in the insects’ bodies. The flowers are solitary and located on long peduncles. The corolla is bilabiate and spurred. It is violet, blue, or pink, rarely white. There are two stamens. The fruit is a capsule. There are about 35 species in the extratropical regions of the northern hemisphere and in South America. In the USSR there are six or seven species, primarily in the north. The common butterwort (P. vulgaris), which grows in damp places, is the most widely distributed.

References in periodicals archive ?
Sundews and butterworts have what's known as flypaper/adhesive traps, while pitcher plants use pitfalls, and bladderworts, as their name suggests, use water-filled bladder traps.
The case is much the same with other species of insectivorous plants, including the Venus' fly-trap, butterworts, and bladderworts, which Darwin discussed far more briefly.
This Site of Special Scientific Interest harbours other wildlife gems, like the rare orchid Tafod Y Gors or butterwort, which catches insects with its slippery leaves, and the Grass of Parnassus, a delicate flower.
Siobhan Butterwort, of Redcross, Co Wicklow, said: "Tourism supports a lot of families in this area.
What do the British plants sundew and butterwort have in common?
It is also home to tafod y gors, or butterwort, whose slippery leaves catch insects, and the pretty grass of Parnassus, which is really a flower.
But closer inspection reveals wildlife gems like the rare orchid Tafod Y Gors or butterwort, which catches insects with its slippery leaves, and the pretty Grass of Parnassus, which isn't a grass at all but a delicate flower.
The cattle are being used to graze areas where there are rare plants such as rock rose, fragrant orchid, bird's-eye primrose, butterwort, blue moor grass, ladies mantle, bitter cress and marsh marigold.
Grazing prevents rank grasses from crowding out plants like blue moor grass, butterwort and yellow wort, bird's eye primrose, dark red helleborine and bee orchid.
Away from the sea the magical Uists provided stunning machair plant life, including hebridean orchid, common butterwort, ragged robin and blankets of buttercups, marsh marigolds, wild pansy and daisies stretching as far as the eye could see.
The insect-eating round-leafed sundew (Drosera rotundifolia) and the common butterwort (Pinguicula vulgaris), were identified and collected by Nick Biddle, a student at Kew's School of Horticulture.