It looks like serratipetala to me. I grow mine in an aquarium where it grows like a weed. It does good for me outdoors but indoors I definitely have to give it lots of humidity.

I think it is a native species of Malaysia or some part of Asia.

Here is the one I grew outdoors this past summer.
{{gwi:432300}}

Here is one next to an exotica in Thailand (2006).
{{gwi:432302}}

And here is one I grew for a friend.
{{gwi:432303}}

Ah HAH!
They just couldn't spell, LOL.
I think you are right.

MAN that Exotica is GO-JUS!