Palomar Community College District
Wayne's World: Desert Varnish and Lichen Crust
Lichens thrive in common and in very specialized and inhospitable climates. This clickable index site offers text and photographs of desert and mountain lichens.
University of Guelph
Canada's Aquatic Environment: Lichens
Find out the exact definition for a lichen when you explore this resource. Examine the morphology, reproduction and importance of Lichen through the content of this resource.