Tramline
Desert Field Trip
Use this site to find out how deserts are formed, where the largest desert is located and if there are different types of deserts.
Missouri Botanical Garden
Missouri Botanical Garden: Plants of the Desert
The Evergreen Project reveals such desert plants as the dragon tree, the saguaro cactus, the prickly pear, the desert spoon, the aloe plant, and the like. Illustrated.
Other
R.j. Hodgkiss: The Succulent Page Page
This site describes and provides many links to succulent plants. Many links and pictures are provided.