We present description of a new class for the high-altitude screes of the Caucasus (the Lamio tomentosi-Chaerophylletea humilis) and two alliances such as the Scrophulario minimae-Symphyolomion graveolentis (Chaerophylletalia humilis, Lamio tomentosi-Chaerophylletea humilis) and the Scrophulario variegatae-Epilobion dodonaei (Epilobietalia fleischeri, Thlaspietea rotundifolii). V članku predstavljamo opis novega razreda na visoko ležečih meliščih na Kavkazu (Lamio tomentosi-Lamietea tomentosi) in dveh zvez − Scrophulario minimae-Symphyolomion graveolentis (Chaerophylletalia humilis, Lamio tomentosi- -Chaerophylletea humilis) in Scrophulario variegatae-Epilobion dodonaei (Epilobietalia fleischeri, Thlaspietea rotundifolii).