Last weekend while in Chicago I came upon a mystery plant. Now I do have to admit that I don't grow every perennial out there but in most cases I can identify the ones I see while on tour.
This plant intrigued me, needless to say I'd love to try a piece someday.
The flowers remind me a little of Columbines.
The foliage underneath the blooms though doesn't resemble Columbine foliage at all.
There are mass plantings of this lovely plant at Millenium Park in Chicago. I'm guessing that it's a perennial since it was surrounded by other perennials. In this one area it was mixed with Stachys monnieri.