A weed but a nice weed so we let it grow. Funny but it only grows in our yard. I never see them in the neighbors' weed filled beds or in other waste areas. The flower is short lived - only a day but the plant has numerous buds so several are blooming at any one day. The flower is small not more than a couple of inches in diameter.
The two bottom pictures are of the seedpod which is as interesting as the flower in my opinion.
