Dendrogramme of 71 phytosociological relevés (Bray-Curtis Index, WPGMA). A: Grasslands with Koeleria macrantha; B: Grasslands with Festuca nigrescens; A1: Stipo-Poion xerophilae; B1: Arrhenatherion; B2: Bromion erecti; B3: Nardo-Agrostion; a: Poo bulbosae-Festucetum trachyphyllae; b: Poo bulbosae-Festucetum trachyphyllae, mesophilic variant c: Centaureo transalpinae-Arrhenatheretum; d: outlier; e: Holco-Chrysopogonetum grylli; f: Phyteumo-Mesobrometum; g: Phyteumo betonicifolii-Festucetum nigrescentis; h: Carici piluliferae-Nardetum strictae.