Plant communities of Teletskiy ridge (the North-East Altai) were described. According to the ecological-phytocoenotic classification they represent five types of vegetation: tundra, forest, high grass, meadow, steppe; according to the floristic one they are included in seven classes: Loiseleurio-Vaccinietea, Vaccinio-Piceetea, Asaro-Abietetea, Brachypodio-Betuletea, Mulgedio-Aconitetea, Molinio-Arrhenatheretea, Festuco-Brometea. Four new associations and one community were revealed. The altitudinal belt column includes two belts: forest-steppe and forest one. The forest belt vegetation prevails over the ridge. The forest-steppe belt has two subbelts: lower and upper; forest belt comprises three subbelts: the low subbelt of mixed forests, the central subbelt of dark coniferous forests and the upper subbelt.Key words: forests, forest altitudinal zone, syntaxonomy, vegetation structure, Teletskiy ridge, the North-East Altai.