Species-rich humid grasslands of oligotrophic calcareous or calcicline soils of middle Europe, southern Fennoscandia and northwestern Iberia, with Silaum silaus, Sanguisorba officinalis, Selinum carvifolia, Stachys officinalis (Betonica officinalis), Cirsium tuberosum, Carex tomentosa, Tetragonolobus maritimus, Galium boreale, Serratula tinctoria, Inula salicina, Dianthus superbus and abundant Colchicum autumnale.