One of my favorite spring flowers to photograph is the Bluet flower (Hustonia caerulea).
Another name for them is Quaker ladies, apparently so named because the shape of the flower is similar to the white bonnets once worn by women of the Quaker faith. I tried googling for an image of such a hat, and I think that's quite a stretch. A better explanation is that they're named for the shade of fabric used in making dresses worn by Quaker ladies.
Here is a macro of an individual flower, which is a pretty little thing: