All 28 species of Scotland's wild orchids are described in detail and illustrated with colour photographs. Up-to-date distribution maps and a comprehensive field key supplemented with line drawings should prove useful to professional botanists and amateur naturalists alike. In the chapters on biology, habitats and conservation, the authors have combined their several areas of botanical expertise to present a complete picture of this group of plants. Specially commissioned pictures were taken over three orchid seasons and there is a chapter on the photographic techniques used to capture the fragile beauty of these orchids in their sometimes remote and often threatened habitats.