Description of Eucomia Ulmoides

[Woody Ligon]

Can anyone suggest a textbook or other publication which might have a good
description (preferably a photograph) of the tree "eucomia ulmoides" commonly
called the hardy rubber tree. 

I bought some seed last year because it seemed interesting assuming that I 
would be able to find a good description but now I seem to have 50 very
healthy seedlings and no good description of the mature tree.  Any help 
would be appreciated.

Woody Ligon