This alliance includes moderately rich fens without the calcicolous species typical of the alliance Caricion davallianae, but still rather species-rich and containing species that avoid extremely acidic habitats. Stands are dominated by short sedges, grasses, dicots and by Sphagnum species from the sections Subsecunda and Squarrosa. Non-sphagnaceous mosses (e.g. Aulacomnium palustre. Calliergonella cuspidata or Warnstorfia exannulata) may also occur and even dominate on some sites. The most acidic poor fens dominated by species of Sphagnum sect. Cuspidata are not included in this alliance. Habitats include managed fen grasslands, fens at fishpond margins and subalpine spring fens. The habitats are fed by ground water which is richer in nutrients than in other alliances of the class Scheuchzerio-Caricetea nigrae. The alliance occurs in most European countries.