Here, for the first time in a special, flexible field guide edition, is the most comprehensive full-color guide to American fungi - called by the New York Times "Anybody"s basic mushroom book....I can"t find any fault with it at all. The color photographs are the best I"ve seen." Includes: how, when and where to collect mushrooms; a simplified pictorial key to the major groups; a key to determine in which major group a mushroom belongs and 72 other keys to determine the exact species; a special section on mushroom toxins; a bibliography; an index to all the species (680) and all the genera described or mentioned.