Vegetation Science Group

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

Vegetation of the Czech Republic

Association MCD01
Rorippo-Phalaridetum arundinaceae Kopecký 1961

Rorippo-Phalaridetum arundinaceae

Photo on botanickafotogalerie.cz

The association Rorippo-Phalaridetum includes vegetation dominated by Phalaris arundinacea, which occurs on stream banks, especially in the middle reaches of rivers, where it can also colonize sand and gravel bars in the river channels. Unlike in the association Phalaridetum arundinaceae, the water table remains largely below the soil surface, with flooding restricted to only a few days nearly every year. When they do occur, floods are strong, disturbing vegetation and removing fine particles from the substrate. This association is common in colline and submontane areas across the Czech Republic, and rarely occurs also on disturbed sites along lowland rivers.

Orig. (Kopecký 1961): Rorippo-Phalaridetum arundinaceae Kopecký 1960 (Rorippa amphibia. R. terrestris = R. ×armoracioides. R. islandica = R. palustris. R. silvestris = R. sylvestris)

Syn.: Chaerophyllo-Phalaridetum arundinaceae Kopecký & Hejný 1965 prov.

Diagnostic species: Myosoton aquaticum. Phalaris arundinacea

Constant species: Myosoton aquaticum, Phalaris arundinacea, Poa palustris. Symphytum officinale. Urtica dioica

Dominant species: Phalaris arundinacea, Urtica dioica

Formal definition: Phalaris arundinacea cover > 25 % AND (Group Bidens frondosa OR Group Cirsium oleraceum OR Group Urtica dioica)

Source: Chytrý M. (2011): MCD01 Rorippo-Phalaridetum arundinaceae Kopecký 1961. 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. 488-491.