Transition mire communities of boreal and western nemoral regions of the Palaearctic domaine dominated by Carex diandra in association with Carex lasiocarpa, Carex appropinquata, Carex limosa, Carex lepidocarpa, Eriophorum gracile, Eriophorum angustifolium, Menyanthes trifoliata, Comarum palustre, Hydrocotyle vulgaris, Pedicularis palustris and an abundance of bryophytes, including the pleurocarps Campylium stellatum, Drepanocladus intermedius and the liverwort Riccardia pinguis, usually forming open swards. These mires are an important habitat for the threatened Liparis loeselii.