The US Department of Agriculture's Plants Database is continually adding improvements. Most recently, the Web site has added an advanced query to allow users to search for specific plant data based on many different...

This straightforward guide to the flora of Missouri comes courtesy of Missourian Dan Tenaglia. The site offers photos and descriptions of the flowering and non-flowering plants of the region. Tenaglia's easy-to-use key...

This site contains a number of Web-accessible botanical resources from Herbarium COLO, the Botany Section of the University of Colorado Museum. Focused exclusively on the flora of Colorado, the site includes species...

Dr. Virginia M. Kline was a plant ecologist who worked at the University of Wisconsin Arboretum for many years. She was an enthusiastic educator, and she also helped to develop the field of restoration ecology. For...