Common butterwort (Pinguicula vulgaris)

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Common butterwort in flower
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Common butterwort fact file

Common butterwort description

KingdomPlantae
PhylumAnthophyta
ClassMagnoliopsida
OrderScrophulariales
FamilyLentibulariaceae
GenusPinguicula (1)

Butterwort is an insectivorous plant. It produces bright purple flowers that have earned the species the alternative names of bog violet and marsh violet (4). The bright yellowish-green leaves feature numerous glands that secrete a sticky fluid which attracts insects. When the insects become trapped, the leaf slowly curls inwards and eventually the insect will be digested (5). The species is known as butterwort as it was thought to have magical properties and the juices from the leaves were rubbed onto cows’ udders in order to protect the milk (and resulting butter) from evil influences (4).

Also known as
bog violet, butter-plant, marsh violet.
Size
Leaf length: 2-8 cm (2)
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Common butterwort biology

Common butterwort is a perennial plant that spends the winter as a dormant rootless bud (2). The habitats in which it occurs are so poor in nutrients that the evolutionary adaptation of feeding on insects has developed. Other plants living in such habitats, such as sundews, have also developed this trait.

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Common butterwort range

This species is fairly common throughout much of Britain, with the exception of central and southern England where it becomes rare and is even absent from several counties (2). In these areas, the species has declined by a worrying 50% since 1930, but many of its sites were lost before the nineteenth century (3).

You can view distribution information for this species at the National Biodiversity Network Gateway.
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Common butterwort habitat

Found in nutrient-poor damp habitats, including bogs, fens, wet heaths and in rock crevices (2) (3).

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Common butterwort status

Not threatened (3).

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Common butterwort threats

The decline of this species is due to the widespread loss and drainage of the wet habitats in which it occurs. Agricultural intensification is also to blame, and the decline of common butterwort is continuing today (3).

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Common butterwort conservation

Conservation action has not been targeted at this species.

There may be further information about this species available via the National Biodiversity Network Gateway.
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Find out more

For more on British native plants and for details of how to get involved in plant conservation visit the website of Plantlife, the wild plant charity:
www.plantlife.org.uk

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Authentication

This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact: arkive@wildscreen.org.uk
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Glossary

Perennial
Plants that live for at least three seasons; after an initial period they produce flowers once a year.
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References

  1. National Biodiversity Network Species Dictionary (January 2004): http://www.nhm.ac.uk/nbn
  2. Clapham, A.R., Tutin, T.G., and Moore, D.M. (1987) Flora of the British Isles- 3rd Edition. Cambridge University Press, Cambridge.
  3. Preston, C.D., Pearman, D.A. and Dines, T.D. (2002) New Atlas of the British and Irish Flora. Oxford University Press, Oxford.
  4. Grigson, G. (1996) The Englishman’s Flora. Helicon Publishing, Ltd., Oxford.
  5. Weber, L. Plants that eat animals (January 2004): http://files.dnr.state.mn.us/publications/volunteer/young_naturalists/insectivores/insectivores.pdf
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Image credit

Common butterwort in flower  
Common butterwort in flower

© Tony Hamblin / www.flpa-images.co.uk

FLPA - images of nature
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Wetheringsett
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Suffolk IP14 5QA
United Kingdom
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Fax: +44 (0) 1728 860 222
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http://www.flpa-images.co.uk

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