Fabio Pupin / Meadow viper, (Vipera ursinii), basking in alpine meadow, Apennines, Italy, September . Non-ex.

Michael Hutchinson / Slow motion clip of a Common carder bumblebee (Bombus pascuorum) feeding from a Viper's bugloss (Echium vulgare) flower, Bristol, England, UK, September.

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.

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.

Juan Carlos Munoz / Viper's bugloss (Echium vulgare) flowering in an olive grove. Sierra de Andujar Natural Park, Jaen, Andalusia, Spain, April 2010

Fabio Pupin / Meadow viper, (Vipera ursinii), basking before storm comes, Apennines, Italy, September . Non-ex.

Fabio Pupin / Meadow viper, (Vipera ursinii), Italy, July . Non-ex.

Fabio Pupin / Meadow viper, (Vipera ursinii), close-up of head, Italy, July . Non-ex.

Fabio Pupin / Meadow viper, (Vipera ursinii), Italy, July . Non-ex.

Bruno D'Amicis / Orsini's viper (Vipera ursinii) adult portrait. Endemic to the Apennines. Abruzzo, Italy, June.

Michael Hutchinson / Slow motion clip of a Common carder bumblebee (Bombus pascuorum) feeding from a Viper's bugloss (Echium vulgare) flower, Bristol, England, UK, September.

Terry Whittaker / Pair of Marbled white butterflies (Melanargia galathea) on Viper's bugloss (Echium vulgare), Kent, England, UK, July.