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 requires users to identify flower color and leaf characteristics only (for the most part); results are thumbnail photos that lead to summary information and additional images. The site also includes some nice photos of insects and other arthropods interacting with plants -- these images may be downloaded as desktop wallpaper. Not from Missouri? Many of the 700+ species in this Web site are common in other parts of the U.S. as well.