Flower on Black - Peony
Don't know what flower it is... This whole thing is part of my Photoshop studies. The background was nicely blurred in the original shot but still a bit distracting. And I had been looking to put together a nice contrasting image. This white big flower was a suitable victim. (Don't worry, it wasn't hurt in the process, I left it where it grows. ) :)
Thanks to oatjiro for the identification, it seems to be a flower fron the Peony branch of flowers.