Vegetation Science Group

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

Vegetation of the Czech Republic

Association VBD06
Hottonietum palustris Sauer 1947

Hottonietum palustris

Photo on botanickafotogalerie.cz

This vegetation type is dominated by Hottonia palustris, which has submerged leaves and conspicuous flowers above the water surface. In habitats which dry out in summer this species occurs in a terrestrial growth form. It occurs in mesotrophic to eutrophic still water up to 50 cm deep, including in oxbows, alluvial pools, channels, periodically flooded ditches and sand pits. It is rare in fishponds. Occurrences are scattered throughout the warm areas of the Czech Republic.

Orig. (Sauer 1947): Hottonia palustris-Assoziation

Syn.: Hottonietum palustris Tüxen 1937 prov. (§ 3b), Callitricho-Hottonietum (Tüxen 1937) Segal 1965, Ranunculo-Hottonietum (Tüxen 1937) Oberdorfer et al. 1967 p. p.

Diagnostic species: Hottonia palustris, Lemna trisulca

Constant species: Hottonia palustris, Lemna minor

Dominant species: Hottonia palustris, Lemna minor

Formal definition: Hottonia palustris cover > 25 % NOT Carex acuta cover > 25 % NOT Carex vesicaria cover > 25 % NOT Oenanthe aquatica cover > 25 % >

Source: Šumberová K. (2011): VBD06 Hottonietum palustris Sauer 1947. 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. 241-245.