For those with an interest in trees, I see Earth Simulation have now put their three volumes of Autogen Trees on their shop site.
One word of warning, they don't include IOM coverage. That's under test at present, being created by Tony Meredith. I'm not sure whether it will emerge as a Freeware product.
Gerry Winskill http://www.earthsimulations.com/Store/index.php?main_page=index&cPath=1&zenid=6c95c189b7aee3b603c3f7e5147d9039