30 colour plates; Provides descriptions and drawings of all the 300+ Australian epiphytes and terrestrials occurring in the tropics. Often referred to by native orchidoligists as "The definitive work". The introduction is followed by key to and a classification of the genera before the main body of the work which contains the descriptions and illustrations. Keys to the various taxa will be found in the appropriate places throughout the text. Lists of abbreviations used throughout the text for authors and publications, and also a glossary and index will be found at the end of the volume.