The genus Didymocarpus belongs to family Gesneriaceae of typical tribe Didymocarpeae. All together 12 species of genus Didymocarpus is found in Nepal which distributed from 500 to 3200 meter. Generic delimitation in Gesneriaceae is difficult due to large overlaps in characters between genera. Thus main objectives of the study is the taxonomic study of the Genus Didymocarpus Wall. of Nepal based on the morphological, anatomical, cytological character along with palynology (SEM method) to show its phylogeny.