I have one U. nuelumbifolia available for trade… Since it's tropical, we'll have to be careful about shipping and weather temps. It is young, but has a photosynthetic stolon coming on pretty strong.
I am nearly maxed out on Sarr space… I am really into the following (but not limited to this list, so let me know what you've got!):
-U. reniformis or longifolia
PM me if interested! I'll post when offer is closed again.