curly petals

The white aucampiae flowers are all done by now. The flowers didn't last long, actually they've withered the day after I tried pollination. It says it is a good sign in the books but I am not certain about anything at this point. It's just too bad they were done so soon. To see an aucampiae with big white flowers is a unique sight indeed. :)
I was also pleasently surprised to see that one of the flowers had curly petals. You could see they're curly right from the start when it was still a flower bud and they stayed this way. It looked so strange but also really cute. Do you know what makes them do this? Is it predisposition or happens spontaneously?
Thanks for your comment