Vegetation Science Group

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

Vegetation of the Czech Republic

Alliance VBB
Potamion Miljan 1933

This alliance includes aquatic vegetation dominated by various species of Potamogeton, and in some cases also of Elodea. Groenlandia. Myriophyllum. Najas and Zannichellia. Most of them have narrow submerged leaves or leaflets, although some have large entire leaves, which are either submerged or with blades floating on the water surface. Biomass produced by this vegetation type is smaller than that produced by the Nymphaeion albae vegetation, although quite often the dominant species occupies the entire water column. Dominant species of the Potamion communities have small inconspicuous flowers, either water-pollinated or emerging above the water surface and pollinated by wind.

Orig. (Miljan 1933): Assoziationsverband Potamion

Syn.: Potamion eurosibiricum Koch 1926 p. p. (§ 34a), Magno-Potamion eurosibiricum Vollmar 1947, Parvo-Potamion eurosibiricum Vollmar 1947, Eu-Potamion (Koch 1926) Oberdorfer 1957, Magno-Potamion (Vollmar 1947) den Hartog et Segal 1964, Parvo-Potamion (Vollmar 1947) den Hartog et Segal 1964, Potamion pusilli (Vollmar 1947) den Hartog et Segal 1964 (fantom), Potamion pectinati (Koch 1926) Görs 1977

Diagnostic species: Elodea canadensis. Potamogeton crispus. P. natans. P. pectinatus. P. pusillus agg.

Constant species: Lemna minor

Source: Šumberová K. (2011): VBB Potamion Miljan 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. 133-135.