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?