The book gives complete details of the orchids in Eastern Ghats. Brief details of Eastern Ghats, its geology, soils, climate etc, are given at the beginning. A bracketed key to the genera and key to the species is also included. It is followed by systematic enumeration. A total of 197 taxa belonging to 66 genera of Orchidaceae have been systematically enumerated. Under each species, citation according to latest ICN, synonyms to connect to national and regional floras, type, etymology, detailed description, flowering and fruiting season, habitat, distribution (world, India, Eastern Ghats) and specimens examined have been given. All the references to orchids of Eastern Ghats have been given at the end. The essence of this book is the colour photographs for all the species available in Eastern Ghats. For some species line diagrams are given instead. Endemic and threat categories have also been mentioned. An index to genera and species is given at the end.