Thanks Susan. You don't see many different Cyrtospermas around, we only have 3 commonly available. And someone in Cairns has a hybrid one available. So I've got the 3 but not the hybrid.
Rachel, I was surprised to see the flower while the plant isn't very tall, not for that species anyway. I had it in a pot sitting in water but then put it in the ground where it gets a bit of overflow from a small pond. My C. johnstonii hasn't shown any sign of flowering yet. And the C. merkusii seemed to enjoy the water when first put in. But the water levels stayed up too long with the really wet wet season we've just had. I've got to a lot more work in that area to stabilise water levels a bit more.