Downloading them now. It appears they're a 'sample' from each of the 30 classes of plant types (looks like the full versious go for nearly $149-99). There's several different formants, including obj, vue, terragen, yada, and yada...;)

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)