Tiny little blue flower
This flower grows all around my apartment complex, the blooms are a bright cornflower blue (washed out a little in this pic) and remind me of a butterfly, with the petal shape and the little curling bit. I'd say the blooms are barely bigger than a match head when budded, maybe a pencil eraser when open. That's regular old grass it's nestled in. I live in northeast Texas, if that helps.