Synopsis The Nalgonda District in Andhra Pradesh, India, has its own diversity of terrain, soils and climate expressions apart from the ingredients of its biodiversity and a part of it near Nagarjunasagar Dam falls under the realms of ‘Project tiger" programme. Anthropogenic factors galore, the district has been exposed to vagaries of temperature and rain fall, scarcity of water sources, influx of cement factories and cross-country laying of new highways and railways. The first part of the book includes introduction, previous work, topography and general features, general vegetation types, floristic analysis etc., the second part includes systematic enumeration. A total of 511 species belonging to 334 genera and 101 families have been enumerated. The families have been arranged according to "Bentham and Hooker’s" system with incorporation of recent changes. Under each family key to the genera, followed by the genus with its authority, key to the species and species enumeration is given. All the genera in a family and all the species in the genus are arranged in alphabetic order. All the keys are of the dichotomous indented type. The nomenclature is brought up-to-date. Species enumeration is with citation, brief description and phenological data. The contents of the book followed the conservation pattern. The book should be useful to the personnel of different walks of profession: teachers, researchers, foresters, tourists and town and landscape planners.