To take a hike

This book several interests that make it a must in my opinion:
It is dense, fairly comprehensive with plenty of edible species and not less dangerous species.
It is relatively small with a hard cover, and once covered, it can easily find its way into a banana next to your collection bag. What good would such a book if he was intransportable?
The only detail a little weird initially is to have separate text and photos. One must make to and from several parts of the book to have a correct view of a plant. It's a minor defect and any passionate of plants and nature that likes to walk in the forest or in the mountains must possess.