Abstract
The High Wavy Mountains are remarkable for their endemic flora, particularly orchids. Among the 34 orchids reported by Blatter in 1928, some of them could not be located and are considered as possibly extinct, mainly due to habitat degradation. This paper deals with 64 species of orchids including all the species reported by Blatter, except Chrysoglossum halbergii Blatt. Bulbophyllum agastyamalayanum Gopalan & Henry is reduced to B. xylophyllum Par. & Reichb. f. Distribution analysis and relevant notes are provided