Basicline Carex limosa swards and floating rafts of the Palaearctic domaine, with Carex lasiocarpa, Carex lepidocarpa, Eriophorum gracile and a rich bryophyte cortège formed by the mosses Scorpidium scorpioides, Drepanocladus revolvens, Calliergon giganteum, Calliergon trifarium, Calliergon stramineum, Campylium stellatum, Bryum pseudotriquetrum, the liverwort Riccardia pinguis, and occasionally sphagna. Scheuchzeria palustris or Liparis loeselii may be present. Outside of transition mires, elements of these communities occur in the depressions of rich fens.