Bryce 5 has an extensive tree lab with some imported 2D plant presets. Bryce 5.5 has a small library of Vegetation by Brian Foley AKA Floeypro. Planit3D (http://www.planit3d.com/) has tons of D/L's. You can try DAZ Studio if you don't want to go the full Poser route. This will allow you a million options. Have fun ICM

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Ockham's razor- It's that simple