Free 3D Models Trees from Krzysztof Czerwinski
Krzysztof Czerwinski, of FreeDeeLab / TrzyDeLab makes publishes a new series of trees, for you to download for free and add to your collection.
The trunk and leaves have been separated into two screens, but they are united in the same group (each tree is a group, with the pivot located at ground level).
Trees have been created with the help of the script for 3ds Max ATree3D , and are released for commercial use.