BUTTERWORT, the popular name of a small insectivorous plant, Pinguicula vulgaris, which grows in wet, boggy land.
A, leaf of Butterwort (Pinguicula vulgaris) with left margin inflected over a row of small flies.
Finally the genera Pinguicula, Utricularia, Genlisea and Polypompholix belong to the gamopetalous order Lentibulariaceae.
Pinguicula is abundant in the north temperate zone, and ranges down the Andes as far as Patagonia; the 250 species of Utricularia are mostly aquatic, and some are found in all save polar regions; their unimportant congeners, Genlisea and Polypompholix, occur in tropical America and south-western Australia respectively.
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