I don't know what this flower is, but it bloomed one day in our front yard and now, several bushes line the curbside. All I know is, the flowers go to sleep at night and only wake up if they're kissed by the sun. And bees seem to like them more than any others we have.
I confess, we ended up with nameless flowers because I bought several seed packs of different perennials several years ago, planted all of them in the front yard, and tossed the packets. I like surprises.