Vegetation Science Group

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

Vegetation of the Czech Republic

Association VBC03
Callitricho hamulatae-Ranunculetum fluitantis Oberdorfer 1957

Callitricho hamulatae-Ranunculetum fluitantis

Photo on botanickafotogalerie.cz

This association is dominated by Callitriche hamulata, which usually occurs in a submerged growth form, but in places with exposed bottoms it can also occur in a terrestrial growth form. Habitats include brooks, channels, upper and middle river courses, and less frequently also small fishponds, fish storage ponds and oxbows. Water is cool and oligotrophic to mesotrophic, in places even dystrophic. Bottom is usually sandy to clayey. This vegetation type is common in cool submontane areas of the Czech Republic, but it is poorly documented.

Orig. (Oberdorfer 1957): Callitricho-Ranunculetum .fluitantis) ass. nov. (Callitriche hamulata)

Syn.: Batrachio aquatilis-Callitrichetum hamulatae Rydlo et Husák 1992 p. p.

Diagnostic species: Callitriche hamulata, Fontinalis antipyretica. Rhynchostegium riparioides

Constant species: Callitriche hamulata

Dominant species: Batrachium aquatile s. l. (B. peltatum), Callitriche hamulata, Fontinalis antipyretica

Formal definition: Callitriche hamulata cover > 25 % NOT Batrachium fluitans cover > 25 % NOT Myriophyllum alterniflorum cover > 25 % NOT Sparganium emersum cover > 25 %

Source: Šumberová K. (2011): VBC03 Callitricho hamulatae-Ranunculetum fluitantis Oberdorfer 1957. 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. 219-223.