Vegetation Science Group

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

Vegetation of the Czech Republic

Association MCE05
Leersietum oryzoidis Eggler 1933

Leersietum oryzoidis

Photo on botanickafotogalerie.cz

This is a wet grassland community dominated by Leersia oryzoides. It occurs in the littoral zones and on exposed bottoms of shallow water bodies such as fishponds and fish storage ponds, as well as in intermittently flooded habitats in floodplains. It does not tolerate substrate desiccation, or long-term flooding in a growing season by water deeper than 5 cm. Water is mesotrophic to eutrophic. This thermophilous community occurs mainly in lowlands and warm colline areas.

Orig. (Eggler 1933): Leersietum oryzoidis

Syn.: Leersietum oryzoidis Krause in Tüxen 1955, Leersio-Bidentetum Poli et J. Tüxen 1960

Diagnostic species: Bidens frondosa, Leersia oryzoides

Constant species: Bidens frondosa, Leersia oryzoides, Persicaria hydropiper

Dominant species: Leersia oryzoides

Formal definition: Leersia oryzoides cover > 25 % NOT Cicuta virosa cover > 25 %

Source: Šumberová K. (2011): MCE05 Leersietum oryzoidis Eggler 1933. 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. 511-514.