Although smut is our business, and as much as we pride ourselves on being on top all things wild and dirty, we confess that when it comes to tree porn we had turn to our dirty-minded (but all natural!) pals at Boing Boing—our go-to source for bark-related erotica. This week, they've turned up some fine examples of naughty natural goodness, from Heather Firth's photos of familiar-looking outcroppings to Aaron Young's mysterious "Light Bodies." But the real find is Marne Lucas, a model (who's also worked under the name Gina Velour) and photographer whose photo spread of "Oregon's Natural Resources" has left us with plenty of extra wood. (Be sure check out her other non-leafy works, as well.) If all environmentalists looked like this, we're sure that everyone would want to be a treehugger.

· "I'm bringing bark sexy!", "More sexy bark" + "Sexy bark, part 3" (Boing Boing)
· Marne Lucas - Oregon's Natural Resources (marnelucas.com)
· Earth Erotica Photography (heatherfirth.com)
· Light Bodies by Aaron A. Young (morrisdesign.com)
· Dryad by Daemonworks (deviantart.com)

Previously: Photography by Patrick Jan Van Hove, "Eves On Skis", Pretty Nudes, More Fucking for Forest