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

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