Regular Butterfly - New Flower - _TNY_6698

This butterfly is a male of the pretty common silver-washed fritillary (Argynnis paphia). Since this shot was taken at the Stora Vika limestone quarry in Sweden, I am not at all sure about the flower though.

 

The thing is, limestone is rare around these parts so the flora growing around the quarry is in large parts new to me.

 

Any suggestions on the species of flower are greatly welcomed. Possibly Origanum vulgare?

Done