Vegetation Science Group

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

Vegetation of the Czech Republic

Association MBA03
Bidentetum cernuae SlavniŠ 1951

Bidentetum cernuae

Photo on botanickafotogalerie.cz

This association is dominated by Bidens cernua. It occurs on the bottoms of summer-drained fishponds, fish storage ponds, oxbows, banks of small streams, ditches or channels. The substrate tends to be rich in nutrients, and is wet or flooded by shallow water. This type of vegetation can even occur in deep water, but it does not tolerate long-term substrate desiccation. In the Czech Republic it occurs mainly in colline areas across the country.

Orig. (SlavniŠ 1951): Ass. Bidentetum cernui ass. nova

Syn.: Bidentetum cernuae SlavniŠ 1947 (ž 2b, nomen nudum), Bidentetum cernuae Kobendza 1948 (ž 2b, nomen nudum)

Diagnostic species: Bidens cernua

Constant species: Bidens cernua

Dominant species: Bidens cernua, Lemna minor, Persicaria hydropiper

Formal definition: Bidens cernua cover > 25 % NOT Alisma plantago-aquatica cover > 25 % NOT Bidens frondosa cover > 25 % NOT Bidens radiata cover > 25 % NOT Bidens tripartita cover > 25 % NOT Leersia oryzoides cover > 25 % NOT Persicaria lapathifolia cover > 25 % NOT Rumex maritimus cover > 25 %

Source: ęumberovß K. (2011): MBA03 Bidentetum cernuae SlavniŠ 1951. In: Chytrř M. (ed.), Vegetace ╚eskÚ republiky. 3. VodnÝ a mok°adnÝ vegetace [Vegetation of the Czech Republic 3. Aquatic and wetland vegetation]. Academia, Praha, pp. 359-362.