I see this plant all the time in the woods. It seems like an invasive species in Michigan: http://www.flickr.com/photos/76284694@N02/7536589276/ http://www.flickr.com/photos/76284694@N02/7536589626/ http://www.flickr.com/photos/76284694@N02/7536589866/ http://www.flickr.com/photos/76284694@N02/7536590256/