Mesophile grasslands of the northern, central and southwestern Alps, occupying gentle north facing slopes (ubac) and humid flats on deep, often slightly acid, soils over calcareous substrates, with Sesleria albicans, Carex sempervirens, Helictotrichon montanum, Arenaria ciliata, Draba aizoides, Globularia repens, Ranunculus thora, Oxytropis triflora, Trifolium thalii, Bartsia alpina, Scabiosa cinerea, Fritillaria delphinensis, Fritillaria burnatii, Crocus vernus, Bulbocodium vernum, Carex tendae.