An interesting one that just came with my new order... This one is normally leafless (though it sometimes has small, short-lived leaves - you can see one in the photo) and the roots do the photosynthesis!
I haven't a vitrine. So I can't cultivate them. But I have a Campylocentrum ariza-juliae. It is also leafless but comes from Cuba/DomRep/Jamaica doesn't need such a high humidity.
The lunifera is about to lose the leaf it has. But the new roots it has are such a pretty reddish colour. This one is going to look really different when it flowers.