This guide presents 70 species and 23 sub-species, while a further 5 species are to be considered doubtful or unstable. For each plant there is a detailed description and reference to the biotopes in which it is found. In addition, the species with which hybridization can occur are mentioned. The possibility of confusion with other species is noted and methods of differentiation are suggested. The description of each plant is completed by an indication of the flowering period, a distribution map and rich photographic material. A diagrammatic map showing the distribution of the species of orchid in the 4 islands is provided, and there is analysis of the condition of a number of special biotopes, especially those which contain species threatened with extinction. This is followed by a presentation of the 86 different hybrids. In the final part of the book a series of excursions is suggested, in order to help the reader towards a rapid familiarization with the wonderful biotopes of the orchid species of the southern Aegean.