Synopsis Cannanore is the second among the northern most districts of Kerala state. It lies between 11 40' and 12 8' N latitude and 75 11' and 76 08' E longitude and is bounded on the north by Kasargod district of Kerala state. On the east by Karnataka state, on the south by Calicut and Wynad districts of Kerala state and on the west by the Arabian sea. North Wynad taluk of the district now forms part of the newly created Wynad district. However, as this area was also taken along with the other areas of the present Cannanore district as a single unit for explorations and study, plants of this area are also included in this flora. The total area under the present study is about 3670 sq. km.