Synopsis The state has been explored intensively by the authors for plant wealth during last 18 years. A total of about 2500 species of Angiosperms occur in the state. Bentham and Hooker's system of classification has been followed in the enumeration of families with certain exceptions to accommodate recent changes. A dichotomous indented key is given for families, genera and species. Under each family key to the genera followed by the genus with its authority, key to the species followed by species enumeration is given. The enumeration of species includes the complete citation according to ICBN, basionym, synonyms, followed by brief description, distribution in the state, flowering and fruiting period, vernacular name and specimens examined. References, index to families, genera and species are given at the end.