beautiful purple flowers but do not know his name.

This morning there was a purple flower blooming in my garden but I do not know his name. I never feel planting it (grow at will alone). There are some spots of this plant just grow in the garden. Dr early had suspected this flower plant seems, so I grow biarin. Because every morning I like his fad a plant that does not fit me. Please help from the steemian friend what is the name of this flower ...?

Purple flowers, do not know their names (funnel-shaped, 4-5 cm diameter, bloom when there is sun, leafy rarely small size elongated spiky), growing outside the yard.