the leaves surely look like rose leaves. it is indeed unusual. are there other flowers on the same plant that look like this? if so, maybe it's a hybrid. everyone comes up with something unusual on almost everything these days. i won't be surprised if one day we will have spotted or striped human skins. oi! aces on the shot.
It sure is, lovely find and shot. My white icebergs look like this towards the end of the season when they get too much rain, albeit not as bad as this one ;-)