Orig. (Toman 1970): Potentillo (opacae)-Festucetum sulcatae Klika 1951 [basionym Festuca ovina (sulcata)-Potentilla opaca as. Klika 1951; syn: Festuco (rupicolae)-Brachypodietum pinnati Mahn 1965] (Potentilla opaca ~ P. heptaphylla, Festuca sulcata ~ F. rupicola)
Syn.: Festuco ovinae-sulcatae-Potentilletum opacae Klika 1951 (§ 34c), Pulsatillo pratensis-Avenuletum pratensis Kolbek 1978, Potentillo arenariae-Agrostietum vinealis Chytrý et al. 1997, Peucedano oreoselini-Festucetum rupicolae (Vicherek 1962) Vicherek et al. in Chytrý et al. 1997
Formal definition: group Phleum phleoides AND (group Jasione montana OR group Trifolium arvense) NOT Calluna vulgaris cover > 25 % NOT Festuca pallens cover > 5 % NOT Festuca valesiaca cover > 25 %