name of flower
This was a tough one to try to identify with the image. We've had six people look at it and we think it's Lysimachia ephemerum, otherwise known as Silver Loosestrife.
Excellent information. I googled images of silver loosestrife and there it is! I thought it acted and looked like a Lysimachia but could never find photos of it. I have seen it in plantings at a rest area in Massachusetts but the folks inside the office had no idea what it was. I certainly appreciate your help and all eight opinions! I gave some to my daughter-in-law a few years ago and she can't get rid of it, even with RoundUp. So I call it the 'mother-in-law' plant. ;-)
Thank you glad we could help!