Iv: Is a comprehensive guide of the macroscopic fruiting bodies of specific mushrooms that have been identified. This book was printed in 1988 there is useful information in here but realize that mycology is ever changing. With the advent of DNA sequencing, some of this information may have changed / be outdated. None the less this is a great book to flip through and find the mushrooms that interest you! It will point you in a good direction to see how to describe the mushroom that’s in your hands.