This is a bloom from a tall and gangly weed that grows all around the hedgerows and borders of the woods here in Southeastern Pennsylvania.
The excellent thing about Jewel Weed is that it's the best cure for stinging nettles, poison ivy and a host of other irritating plants. I know it works because I've used it often. The stems should be broken open and the gel applied to the affected area.
Jewel Weed usually always grows around sources of water, and can also be found growing around poison ivy and stinging nettles. A sure test to determine if it's really the plant you seek is to take a leaf and push it gently underwater. The underside of the leaf will turn a liquid silver. (Hence the name!)
Oh, and if you click the link, don't mind the author. I think he's just a horny guy.Until tomorrow, my friends.