blue and white flowers

I don’t know what these flowers are called but I love the way the lower petals are all white and the upper are blue, making it look like the two separate flowers have been fused together to make these pretty combinations. Also what’s interesting is how the anthers (the yellow bits with the pollen) are on the tips of the petals instead of in the centre of the flower. If anyone knows the name of these lovely flowers please, do let me know.