This species-poor vegetation type, dominated by Eleocharis quinqueflora, represents an initial successional phase at water-saturated and disturbed patches of calcareous fens. The moss layer may be absent due to frequent disturbance or high water table. It is more common in limestone areas of the Alps and Carpathians, while in the Czech Republic it is rare and fragmentarily developed in small patches in the flysch zone of the Western Carpathians and in central Bohemia.