In this study, we realized analysis of plant communities in carbonate mountain range Belianske Tatry. We established and registered 24 phytocenologic plots on vertical transects on slopes with south and north exposure. Our methods were corresponded with common methods of slovak forestry typology. Information from each plot were rewritten in to the Microsoft Access® Database and classified as table synthesis in JUICE Software. The results from the synthesis were species divided in to the groups along the altitude gradient. We sorted species to three groups according to forest vegetation stages (5.-7.) indicated by frequency. The response of species to altitude was analysed by indirect (DCA) gradient analysis. Our results provide an overview of species change with the increasing altitude. Results are based on groups of typical differential species, that indicated each vegetation stage. The specifics of the Belianske Tatry mountains are calcific, dealpine and thermophilic species. In general, with increasing altitude we recorded the increasing frequency of acidophilic species against decreasing frequency of nitrophious and eutrophic species. In discussion we focused to compare our differential species with results of other authors from several slovak mountains. Belianske Tatry are in part similar with other mountains, but there are many specific deviations, typical for local conditions. In the end, we tried to describe local curiosities and the main factors, that are the reason.