Sesleria albicans-dominated facies of communities of unit E1.262 or E1.266, often rich in dealpine species, occurring in particular in the Alpine and Pyrenean periphery, but also occurring locally, farther from the immediate Alpine influence, in anomalous stations such as steep, more or less shaded slopes or cliffs; Sesleria argentea-dominated grasslands of Alava and Navarra.