This outstanding resource from the University of Wisconsin-Madison Botany Department is one of the best laboratory learning tools available on the web. Separated into five sections (General Botany, Trees, Fungi, Plant Diversity, and Vegetation of Wisconsin), each resource becomes progressively more specific with every click of the mouse; at the final, species level, there are clear images illustrating a particular feature. Although all sections provide abundant information, the Teaching Collection is an exceptional resource, since clear photographs of plants are excellent substitutes for fresh specimens in areas of the country or at times of the year when such materials are not available. Organized into nine taxonomic headings (Coniferophyta through Sphenophyta), the user clicks down to the species level; there, the user will find spectacular color photographs of distinctive plant family characteristics (leaves, flowers, fruits, etc.). The photographs and images are not accompanied by text, so additional information will be necessary for beginners.