This is the first book to cover these 3 popular orchid genera together accompanied by investigative floristic observations of the subtribe Coelogyninae. More than 300 species are covered in depth with hundreds of qulaity colour photos and technical drawings with numerous species photos never before been published in other books. The main chapter includes rare species of Bulbophyllum, Coelogyne, Dendrobium with details on growth and flower habits, measurements. counties of distribution etc. Before the main chapter, floristic observations are provided on the morphological boundaries of the remaining Coelogyninae genera accompanied by many colour photos of species from these genera including Brachisepalum, Chelonistele, Dendrochilum, Dickasonia, Nabaluia, Geesinkorchis, Panisea, Gynoglotis etc. One new Coelogyne species Coelogyne superba is described as new with many colour photos and technical illustrations. The genera Bulleyia, Neogyna, Otochilus and Pholidota are all treated as Coelogyne with a total of 32 new names made in Coelogyne. The genus Ischnogyne is reduced to sectional level within Panisea. This book is a must have for all lovers of orchids and especially those whom specialize in the genera Bulbophyllum, Coelogyne and or Dendrobium and or have an interest in the subtribe Coelogyninae.