the book is very comprehensive, more than 1,500 species, mushrooms are well detailed and other species. I am amateur debutante and was looking for a more complete book for improve myself. this guide is a good stepping stone to a better knowledge of mushrooms. the illustrations are excellent and reliable. this is what determined my choice compared to other guides (including delachaux collection that I loves bcp but do not like it for fungi). I trusted the many customers comments and I am very satisfied. the book is easy to read at home for the return of picking and in the field. the texts are very concise. I regret that the information edible / or not be so hard to find! and it's still the main information that one seeks. same remark about the book: the thin blanket and glued sheets are fragile and I can not see myself in the forest with. Yet the pocket format is very well suited!