I was creating some closeup and medium range renders using the Standard Vue SolidGrowth Trees and began to realize that there are some problems with the basic wood trunk and bark materials. Some of these problems are due to how the basic materials are mapped while others require significant improvements to create a more realistic result.  So I ended up re-creating the wood materials for the entire basic Vue Tree collection. The materials are 100% procedural and distortion free.  They even look decent when rendering at close range. Here's a link showing a comparison of the original versus revised materials (original on the left, new on the right):

http://www.skinvue.net/Vue6/VueTrees.jpg

Here's a download link to a zip file containing the new materials:

http://www.skinvue.net/Downloads/VueTreeWoodMats.zip

Enjoy!