For the pocket rather than the bookshelf, the field key from Wild Orchids of Scotland has been reproduced as a separate booklet. Field Key to Wild Orchids of Scotland should enable on-the-spot identification without the need to pick specimens, an important consideration in keeping with the Royal Botanic Garden Edinburgh's commitment to conservation. The majority of buyers will already have purchased Wild Orchids of Scotland . They will want to explore the countryside for wild orchids and will take this pocket guide with them rather than damage the large, glossy main volume.