Low Light Plants for an Asian Biotope?

I've nearly finished stocking my 50 Gallon Asian Biotope tank, but I feel it needs to be aquascaped. I'm looking for some low light plants that would fit into a tank like this, of all sizes. What would you suggest?

 

Some cryptocoryne species will do well in low light. Water sprite, Java moss, and Java fern would also be good choices.

 

Thanks, Ryan. Are there any Crypts you'd recommend?

 

Any of the Cryptocoryne WendtiI varieties (red, brown, or green) and also Cryptocoryne undulata would be good choices. I'm sure there are a few other ones that are low light as well but those are the ones I've had experience with.

 

Okay, thanks Ryan.