I found these in a country park as well. I'd like to identify them if I can. While they seem quite distinctive in appearance to me I cannot find them online.
EDIT: I had used a link to flickr before SE used imgur.com for hosting images. I think I'd moved the images around in flickr which broke the url. I couldn't find a way to figure out which images I'd originally got posted in this question. I picked two. You can find these and other flower images on my flickr account.