"Digital images, in several resolutions, of radial, tangential, and cross-sections of 350 North American woods from the 14-volume rare book The American Woods...

"Botany online is based on the textbook Botanik by Peter von Sengbusch (Mc Graw-Hill Book Company, 1989)...

Identifies the trees and shrubs of North America, using simple identification keys...

Exquisite detailed photographs of flowers and plants of Missouri (many of which are found in Ohio as well) color- and leaf-keyed...

A source for vascular plants, mosses, liverworts, hornworts, and lichens indigenous to the United States and its territories, as well as information on endangered, agriculturally useful, noxious and wetland indicator species...

A "collection of information about biodiversity compiled collaboratively by hundreds of expert and amateur contributors...