By R. Larry Peterson, Hugues B. Massicotte and Lewis H. Melville. Symbiotic relations between roots and fungi (mycorrhizas) are the most prevalent symbiotic systems on earth. Mycorrhizal associations can be found in all ecosystems and in important forest and crop species. This book provides a summary of all the mycorrhizal categories from a morphological and anatomical perspective. Numerous diagrams, color illustrations and photographs serve to complement and illuminate this thoroughly-referenced and researched introduction to mycorrhizal systems. 81/2 x 11 inches, 196 pages, softcover.