If I had to guess, and keep in mind this is a total guess, I really can't see the smallish (to me) photo that well, I would guess Kwanso. Based on the fact that I can make out some stamens and the fact that the center of the bloom looks rather tall. I really can't get a good look at how compact and organized the petals are, so back to square one, it could be Flore Pleno.