Vegetation Science Group

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

Vegetation of the Czech Republic

Association RBC03
Agrostio caninae-Caricetum diandrae Paul et Lutz 1941

Agrostio caninae-Caricetum diandrae

Photo on botanickafotogalerie.cz

This association occurs in moderately-rich fens which are poorer in calcium than floristically and ecologically similar fens of the Menyantho trifoliatae-Sphagnetum teretis association. This is reflected in a lower representation of calcicolous species. The vegetation is composed of short and tall sedges, including species with a boreal distribution such as Carex chordorrhiza and C. diandra, as well as several endangered species and glacial relicts. Calliergonella cuspidata and Sphagnum teres are the most common dominant species of the moss layer. The association is mainly distributed in north-western Europe, and in the Czech Republic it occurs predominantly in the Třeboň Basin (fens at fishpond margins), the Doksy area and the Bohemian-Moravian Uplands.

Nomen inversum propositum

Orig. (Paul & Lutz 1941): Carex diandra-Agrostis canina-Ass. Paul et Lutz 1941

Syn.: Carici chordorrhizae-Sphagnetum obtusi Warén 1926 (§ 3d, association of Uppsala School), Caricetum chordorrhizae Paul et Lutz 1941 (§ 25), Amblystegio scorpioidis-Caricetum diandrae Osvald 1923 calliergonetosum gigantei Jasnowski 1962, Meesio-Caricetum limosae Rybníček 1974 p. p., Amblystegio scorpioidis-Caricetum diandrae Osvald 1923 sphagnetosum auriculati Steiner 1992, Amblystegio scorpioidis-Caricetum diandrae Osvald 1923 sphagnetosum teretis Krausch ex Steiner 1992, Caricetum diandrae sensu auct. non Jonas 1933 (pseudonym)

Diagnostic species: Agrostis canina. Carex canescens. C. chordorrhiza, C. diandra, C. nigra. C. rostrata, Menyanthes trifoliata, Potentilla palustris. Valeriana dioica. Viola palustris; Hamatocaulis vernicosus. Sphagnum obtusum. S. teres. Straminergon stramineum. Warnstorfia exannulata

Constant species: Agrostis canina. Caltha palustris. Cardamine pratensis. Carex canescens, C. diandra, C. nigra, C. panicea. C. rostrata. Equisetum fluviatile. Eriophorum angustifolium. Galium palustre agg., G. uliginosum. Lychnis flos-cuculi. Lysimachia vulgaris. Menyanthes trifoliata. Potentilla palustris. Valeriana dioica. Viola palustris; Calliergonella cuspidata

Dominant species: Carex diandra, C. chordorrhiza, C. limosa, C. rostrata, Menyanthes trifoliata, Potentilla palustris; Bryum pseudotriquetrum, Calliergonella cuspidata, Sphagnum obtusum, S. teres

Formal definition: Carex chordorrhiza cover > 5 % OR Carex diandra cover > 5 % OR Carex limosa cover > 5 % AND ((Group Carex panicea AND Group Carex rostrata) OR Group Viola palustris) NOT Group Eriophorum latifolium NOT Group Sphagnum warnstorfii NOT Hamatocaulis vernicosus cover > 5 % NOT Scorpidium revolvens s. l. cover > 5 % NOT Sphagnum contortum cover > 25 % NOT Sphagnum recurvum s. l. cover > 50 % NOT Warnstorfia sarmentosa cover > 5 %

Source: Hájek M. & Hájková P. (2011): RBC03 Agrostio caninae-Caricetum diandrae Paul et Lutz 1941. 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. 668-672.