From the Missouri Botanical Gardens, this Web site provides a classification of angiosperms that can be navigated either by phylogenic tree, Order, or Family. A detailed description of the classification system is...

An excellent, very well-organized resource, this Image Gallery website was created by the Lady Bird Johnson Wildflower Center -- Native Plant Information Network. The Image Gallery hosts "a collection of over 17,000...

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...

The Pherobase was developed by Dr. Ashraf El-Sayed, a research scientist at HortResearch in New Zealand, with the primary objective of providing "coverage of the literature published on chemical communication in...