Vegetation Science Group

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

Vegetation of the Czech Republic

Association VAA10
Riccietum rhenanae Knapp et Stoffers 1962

Riccietum rhenanae

Photo on botanickafotogalerie.cz

This association includes stands dominated by Riccia rhenana, a submerged aquatic liverwort. Compared with R. fluitans, this species is less sensitive to eutrophication. This association accordingly occurs in more eutrophic water bodies such as alluvial pools, oxbows and fishponds. In the Czech Republic it is most common in lowland and colline areas.

Orig. (Knapp & Stoffers 1962): Riccietum rhenanae

Diagnostic species: Lemna minor, Riccia rhenana

Constant species: Lemna minor, Riccia rhenana

Dominant species: Lemna minor, Riccia rhenana

Formal definition: Riccia rhenana cover > 25 % NOT Carex riparia cover > 25 % NOT Equisetum fluviatile cover > 25 % NOT Oenanthe aquatica cover > 25 % NOT Ricciocarpos natans cover > 25 % NOT Schoenoplectus lacustris cover > 25 % NOT Sparganium erectum cover > 25 % NOT Sparganium natans cover > 25 % NOT Typha angustifolia cover > 25 % NOT Typha latifolia cover > 25 %

Source: Šumberová K. (2011): VAA10 Riccietum rhenanae Knapp et Stoffers 1962. 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. 72-74.