Vegetation Science Group

Department of Botany and Zoology | Faculty of Science | Masaryk University

Vegetation of the Czech Republic

Alliance RBD
Sphagno-Caricion canescentis Passarge (1964) 1978

This alliance includes poor acidic fens, which are fed mostly by ground water, but calcium concentrations are low. However, nutrient availability is better than in ombrotrophic bogs. The vegetation is dominated by species of Sphagnum sect. Cuspidata or Polytrichum commune in the moss layer, and by short (Carex echinata and C. nigra) or tall (C. lasiocarpa and C. rostrata) sedges. Acidophilous species prevail in this kind of vegetation and some species of ombrotrophic bogs can also be present. The alliance is widely distributed on calcium-poor bedrock and includes young, managed fen grasslands, fens at fishpond and lake margins and bog laggs. It may develop through a process of autogenic succession from vegetation of the alliances Sphagno warnstorfii-Tomentypnion nitentis and Caricion canescenti-nigrae. The range of this alliance probably includes northern, western and central Europe.

Orig. (Passarge 1978): Sphagno-Caricion canescentis Pass. 64 (Sphagnum palustre. S. papillosum et sp., S. recurvum)

Syn.: Sphagno-Caricenion canescentis Passarge 1964 (suballiance)

Diagnostic species: Agrostis canina. Carex echinata. C. nigra, C. rostrata, Drosera rotundifolia. Eriophorum angustifolium. Oxycoccus palustris s. l., Potentilla erecta. P. palustris. Viola palustris; Polytrichum commune. Sphagnum palustre, S. recurvum s. l., Straminergon stramineum

Constant species: Agrostis canina. Carex echinata. C. nigra. C. rostrata. Eriophorum angustifolium. Potentilla erecta. Viola palustris; Polytrichum commune, Sphagnum recurvum s. l.

Source: Hájek M. & Hájková P. (2011): RBD Sphagno-Caricion canescentis Passarge (1964) 1978. In: Chytrý M. (ed.), Vegetace České republiky. 3. Vodní a mokřadní vegetace [Vegetation of the Czech Republic 3. Aquatic and wetland vegetation]. Academia, Praha, pp. 677-683.