Book compact, light and easy to use. The pictures are sharp, the plugs are concise. The ease of use is an objective pursued and attained by the authors and publisher (plastic cover, paper and printing quality), multiple search index, alphabetically, by family, Latin scientific name, information for differentiating " fake twins ". Compact size can be taken away easily (walking, hiking), quality / price impeccable. Very handy to quickly view, identify, know the geographical location, the flowering season, etc ... I already have other works from the same collection (trees, minerals, fungi), which I recommend. Their "friendly" presentation and content accessible to outsiders they can be used with children. You never acquires early taste of discovery and knowledge. The works of this type contribute.