A carnivorous bog plant which has violet flowers borne above a rosette of greasy yellowish-green leaves that trap and digest small insects, found in both Eurasia and North America.
- Genus Pinguicula, family Lentibulariaceae: several species, in particular the common butterwort (P. vulgaris).
- Skylarks sang over the wetlands, carnivorous butterworts were in violet flower and cotton grass fluffed up the land.
- The violet flowers of butterworts nod manically at the roadside, seeming too delicate for this windswept terrain.
- There are many more plants that will thrive in medium light, among them Irish moss, Tahitian bridal veil, heart-leaved philodendron, pitcher plant, and butterwort.
Late 16th century: named from the plant's supposed ability to keep cows in milk, and so maintain the supply of butter.
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