I had ordered the small atlas of plants ... but unfortunately these little books did not allow at all to identify a plant with certainty. So I ordered the guide delachaux plants by color and I have to say the quality is really at the rendezvous. Drawings are very accurate and can identify a plant with much more certainty, however, if there is still any doubt, the average size of the plant, the flowering period and its main living areas are specified for each of them. This book is available to all newbies like me, who want to look for a longer loan on the nature around them and of course the more experienced. The plants are classified by color and then sub-classified according to the structure of the flower (petals numbers ...). One can also note the presence of a small recap of the notions of botanical bases, very useful to go a little further and find it.