Way cool botany site

The Missouri Botanical Garden Library has made a Web 2.0 site of botanical works, the Botanicus Digital Library:

Botanicus is a freely accessible, Web-based encyclopedia of historic botanical literature from the Missouri Botanical Garden Library. Botanicus is made possible through support from the W.M. Keck Foundation and the Andrew W. Mellon Foundation.

As always I just love it when someone hands me facsimile copies of ancient publications (although they have some more recent stuff too), all under a Creative Commons license.