Having the first French edition of this wonderful book, I had to buy it at the time for being bio-technology, in fact each student had to prepare for practical work, a herbarium is to say as this book was of paramount importance to me that now goes back more than 18 years ago and yet I still remember the walks on the roadside, with this book in hand, a bag and secateurs. Besides the colors, can be identified by symbols if the plants are poisonous or not, this is a magnificent identification key is both simple and elaborate, starting besides the preface by a small botanical description of the terms used with examples and then we go directly to plates drawn very realistic, possible confusion with the name, full description, places, is really an indispensable tool for fun hiking or for budding herbalist ... ...