Viola sororia

Very, very common blue violet. Found in lawns as well as rich bottomlands and even drier sites. Viola sororia hybridizes with other stemless (no leaves on flower stem) violets and can be found with various color forms (both wild and horticultural). A common white form with blue-grey center is often called 'Confederate violet', aka Viola sororia forma priceana. Common blue violet is a host plant for Fritillary butterfly larvae and specialist bees utilize the leaves.