Relatively species-poor humid grasslands of oligotrophic acid moist gley soils, sometimes with stagnant water and peat formation, of middle Europe north to the southern boreal approaches in Fennoscandia and the Faeroe Islands, and south to northwestern Iberia, with Succisa pratensis, Potentilla erecta, Potentilla anglica, Viola persicifolia, Viola palustris, Galium uliginosum, Cirsium dissectum, Crepis paludosa, Luzula multiflora, Juncus conglomeratus (Juncus subuliflorus), Ophioglossum vulgatum, Inula britannica, Lotus uliginosus, Dianthus deltoides, Carex pallescens, Carex demissa, Carex canescens, Carex echinata.