Periwinkle

Haven't got a clue about the name of these wild flowers that bloom in a kind of delicate blue purple... what's called "Periwinkle" (internet showed me). I do like these pretty wild flowers ~in the Extra a view with more clarity and less DOF. All your reactions upon this wild little flower are welcome and I wonder if anyone of you can tell me its name.

Have a good week, Blippers! and appologies for failing to keep up my entries on daily base