This CD-ROM treats 19 genera from Kuhlhasseltia to Ophioglossella. with nearly 400 species. Among the major genera are Malaxis, Mediocalcar, Oberonia and Octarrhena. For every species a full description is given, with data on distribution(including maps in colour), synonymy, cultivation, ecology, typification, classification, references etc. An impressive collection of colour photographs and drawings, both published and unpublished, complements the texts. Several leading botanical institutes, such as the Royal Botanic Gardens, Kew, The Royal Botanic Garden , Edinburugh, the Herbarium Bogoriense, Bogor, and the National Capital Botanic Garden, Port Morsby, as well as many well-known photographers have contributed to make this CD-ROM series a must for all who are interested in the orchids of New Guinea and Southeast Asia.