Ole Jorgen Liodden / Heartsease / Wild pansy (Viola tricolor) flower, Norway, May.

Bernard Castelein / Wild pansy ( Viola tricolor), Klein Schietveld, Brasschaat, Belgium. April

Terry Whittaker / Water vole (Arvicola amphibius) being anaesthetised for health check, prior to release into the wild. Head Vet Nurse Leasa Neame and Vet Nurse Laura Wilson check the vole's heart rate and warm its tai...

Fabrice Cahez / Heart's ease (Viola tricolor) flower, Mont-Lozere, France

Nick Garbutt / Wild pansy (Viola tricolor) Nordtirol, Austrian Alps, Austria, July.

Bernard Castelein / Heartsease flower (Viola tricolor), Klein Schietveld, Brasschaat, Belgium, May.

Ole Jorgen Liodden / Heartsease / Wild pansy (Viola tricolor) flower, Norway, May.

Erlend Haarberg / Wild pansy (Viola tricolor), Stockholm archipelago, Sweden, June.

David Tipling / Wild pansy (Viola tricolor) growing in sand dune, Sands of Forvie National Nature Reserve, Aberdeenshire, Scotland, June.

David Tipling / Wild pansy (Viola tricolor) growing in sand dune, Sands of Forvie National Nature Reserve, Aberdeenshire, Scotland, June.

Nick Upton / Dune pansies / Seaside pansies (Viola tricolor curtisii) flowering on coastal sand dunes, Merthyr Mawr Warren National Nature Reserve, Glamorgan, Wales, UK. April.

Ashley Cooper / Heartsease pansy (Viola tricolor) and Ladys bedstraw (Galium verum) flowering, Walney Island, Cumbria, UK. June.