Dendrochilums are a conspicuous element of the lower montane forest environment in Sumatra, Borneo and the Philippines. Of the estimated 263 species in the genus, 81 (87 including subspecies and varieties) are currently recognized from Borneo. This volume provides keys, detailed descriptions, distributional and habitat notes and line illustrations of all the species native to the island. Morphology, phylogenetics, ecology, biogeography and endemism are discussed in detail. This is essential reading for growers, collectors and botanists.