Alex Hyde / Wide angle view of Common Swallowtail Butterfly (Papilio machaon) resting on Viper's Bugloss / Blueweed (Echium vulgare) in alpine meadow. Nordtirol, Tirol, Austrian Alps, Austria, 1700 metres altitud...

Alex Hyde / Common Swallowtail Butterfly (Papilio machaon) resting on Viper's Bugloss / Blueweed (Echium vulgare) in alpine meadow. Nordtirol, Tirol, Austrian Alps, Austria, 1700 metres altitude, July.

Nick Upton / Viper's bugloss (Echium vulgare) clump growing on karst limestone mountain scree slope at 1550m in the Julian Alps, Triglav National Park, Slovenia, July.

Nick Upton / Viper's bugloss (Echium vulgare) flowering on karst limestone mountain scree slope at 1550m in the Julian Alps with Cumulo nimbus clouds forming above 2864m Mount Triglav in the background, Triglav Na...

Colin Varndell / Viper's buglos (Echium vulgare) single spike in flower. Porland, Dorset, UK, June

Wild Wonders of Europe / Maitland / Black veined white butterfly (Aporia crataegi) feeding on Viper's bugloss (Echium vulgare) Lagadin region, Lake Ohrid, Galicica National Park, Macedonia, June 2009

Wild Wonders of Europe / Wothe / Viper's bugloss (Echium vulgare) in flower, East Slovakia, Europe, June 2008

Wild Wonders of Europe / Wothe / Viper's bugloss (Echium vulgare) in flower, East Slovakia, Europe, June 2008

Russell Cooper / Viper's Bugloss (Echium vulgare) flowers, North Downs, Surrey, UK

Geoff Simpson / Viper's bugloss {Echium vulgare} Peak District NP, Derbyshire, UK

Jose B. Ruiz / Viper's bugloss {Echium vulgare} Spain

Ross Hoddinott / Viper's-bugloss {Echium vulgare} Braunton Burrows, Devon, UK