Duncan Mcewan / Common butterwort (Pinguicula vulgaris) with trapped insects. Scotland, UK, Europe

Will Watson / Large-flowered butterwort (Pinguicula grandiflora), MacGillycuddy's Reeks, County Kerry, Republic of Ireland. June.

Laurie Campbell / Common butterwort (Pinguicula vulgaris) in flower, Beinn Eighe National Nature Reserve, Wester Ross, Scotland, June.

Mike Read / Butterwort (Pinguicula corsica) on roadside bank, Asco Valley, Corsica, France.

MYN / Marko Masterl / Alpine butterwort (Pinguicula alpina) in flower, Slovenia, Europe, March. meetyourneighbours.net project

MYN / Marko Masterl / Alpine butterwort (Pinguicula alpina) in flower, Slovenia, Europe, March. meetyourneighbours.net project

Alex Hyde / Common Butterwort (Pinguicula vulgaris) growing in peat bog. This carnivorous plant has sticky droplets covering its leaves that trap its insect prey. Isle of Mull, Scotland, UK. June.

Chris Mattison / Butterwort (Pinguicula gigantea) leaves, insectivorous plants, cultivated specimen.

Chris Mattison / Lau's Butterwort (Pinguicula laueana) occurs in Mexico.

Paul Harcourt Davies / Large-flowered Butterwort (Pinguicula grandiflora) in flower, Lago Ritorto, Madonna di Campiglio, on acid rocks of Adamello Range, Dolomites, Italy

Paul Harcourt Davies / Apennine butterwort (Pinguicula longifolia ssp reichenbachiana) in flower, Camosciara, Abruzzo, Italy, June

Paul Harcourt Davies / Apennine butterwort flower (Pinguicula longifolia ssp reichenbachiana) Camosciara, Abruzzo, Italy, June

Adrian Davies / Large flowered butterwort (Pinguicula grandiflora), Picos de Europa, Spain, June.

Kevin Schafer / Butterwort (Pinguicula casabitoana), Ebano Verde Scientific Reserve, Dominican Republic

Laurie Campbell / Common butterwort (Pinguicula vulgaris) close-up of leaves including those of common sundew, both with trapped insect life, Glen Affric National Nature Reserve, Inverness-shire, Scotland, July

Orsolya Haarberg / Common butterwort (Pinguicula vulgaris) flower, Norway

Gary K. Smith / Common Butterwort (Pinguicula vulgaris) in flower, Norfolk, England, UK, May

Robert Thompson / Alpine butterwort (Pinguicula alpina)

David Tipling / Large flowered butterwort {Pinguiculua grandiflora} against granite rock. Killarney NP, Co Kerry, Republic of Ireland.

Albert Lleal / Weser Butterwort (Pinguicula weser) a hybrid of the two mexian butterworts, often used in pest control, Madrid, Spain

Nature Production / Butterwort {Pinguicula vulgaris var. macroceras} flowering on rocks in mountains, Yuubari-dake, Hokkaido, Japan

Adrian Davies / Large flowered buttewort with flies caught on leaves {Pinguicula grandiflora} UK

Claus Meyer / Mexican Butterwort (Pinguecula esseriana) leaves with trapped flies, Amazon ecosystem, Brazil

Tony Evans / Large flowered butterwort flowering {Pinguicula grandiflora} UK

Tony Evans / Large flowered butterwort flowering {Pinguicula grandiflora} UK

Duncan Mcewan / Common butterwort {Pinguicula vulgaris} Scotland UK

Juan Manuel Borrero / Large flowered butterwort {Pinguicula grandiflora} Pyrenees, Catalonia, Spain

Juan Manuel Borrero / Large flowered butterwort in flower {Pinguicula grandiflora} Pyrenees, Spain

Robert Thompson / Large-flowered butterwort (Pinguicula grandiflora) Callow Hill, County Fermanagh, Northern Ireland, UK, June

Adrian Davies / Common butterwort {Pinguicula vulgaris} Scotland, UK, June

Nick Upton / Common butterwort (Pinguicula vulgaris) flowering on marshy hillside with small flies trapped on its sticky leaves, Cwm Cadlan National Nature Reserve, Brecon Beacons, Wales, UK. June.

Nick Upton / Common butterwort (Pinguicula vulgaris) flowering on marshy hillside, Cwm Cadlan National Nature Reserve, Brecon Beacons, Wales, UK. June.

Nick Upton / Common butterwort (Pinguicula vulgaris) flowering on marshy hillside with small flies trapped on its sticky leaves, Cwm Cadlan National Nature Reserve, Brecon Beacons, Wales, UK. June.

Chris Mattison / Mexican butterwort (Pinguicula cyclosecta) in flower, in cultivation.

Nick Upton / Common butterwort (Pinguicula vulgaris) leaf with a small fly trapped by the sticky droplets this carnivorous plant exudes from glandular hairs, Cwm Cadlan National Nature Reserve, Brecon Beacons, Wal...

Nick Upton / Common butterwort (Pinguicula vulgaris) leaves and seedheads growing by a small stream on a marshy hillside, Cwm Cadlan National Nature Reserve, Brecon Beacons, Wales, UK. August.

Nick Upton / Common butterwort (Pinguicula vulgaris) leaf with a Red ant (Myrmica sp.) trapped by the sticky droplets this carnivorous plant exudes from glandular hairs, Cwm Cadlan National Nature Reserve, Brecon...

Chris Mattison / Lau's butterwort (Pinguicula laueana) flowering, Mexico.

Chris Mattison / Lau's butterwort (Pinguicula laueana) bud, Mexico.

Chris Mattison / Large-flowered butterwort (Pinguicula grandiflora) flowering, a rare species in the UK, Edale, Derbyshire. June.

Chris Mattison / Lau's butterwort (Pinguicula laueana), Mexico, on black background.

Chris Mattison / Lau's butterwort (Pinguicula laueana) flowers, close up, Mexico.

Mike Read / Pale butterwort (Pinguicula lusitanica) at the edge of a bog, New Forest National Park, Hampshire, England, UK, July.

Paul Harcourt Davies / Alpine butterwort (Pinguicula alpina) amongst Moss covered rocks. Fassa Valley, Dolomites, Trentino, Italy. June.

Paul Harcourt Davies / Alpine butterwort (Pinguicula alpina). Pordoi Pass, Trentino, Italy. June.

Steve Nicholls / Large flowered butterwort (Pinguicula grandiflora) flowers, UK, May.