This volume addresses structure and behavior, reproduction, colors, physiology and growth, chemistry, habitat, ecosystems, North American distribution, human use, use as environmental monitors, and methods of identification of approximately 1,500 lichens of the 14,000 species existing worldwide. Color photographs grace nearly every page. Each species is presented categorized by groups such as fruticose, crustose, squamulose, jelly, and foliose. A glossary and suggested readings complete the volume. Brodo is emeritus research scientist at the Canadian Museum of Nature in Ottawa. The Sharnoffs are veteran nature photographers. If not for the support of benefactors like the British Lichen Society and the Educational Foundation of America, this beautiful book could have sold for as much as $350. Annotation c. Book News, Inc., Portland, OR (booknews.com)