WaterLily Square

I actually don't know the name of this square, but it does look like a WaterLily to me.






Someone showed the picture on Crochetville, and since then I've been searching for a pattern. No luck so far, but the search has been fun.

I think I can noodle out the pattern for the petals (the middle ones look like a sc, dc, tr, dc, sc shell, not so sure about the outer petals) and the green square shouldn't be to hard to approximate.

It's the pink ball in the center that I'm not sure about. And wouldn't it need to be stuffed with something to keep it from flattening out?

P.S. Could it also be a Lotus Blossom?