Syn.: Polygono hydropiperis-Bidentetum (Koch 1926) Lohmeyer in Tüxen 1950 p. p. (§ 2b, nomen nudum), Bidenti-Polygonetum mitis Tüxen 1979
Formal definition: group Bidens frondosa AND (Bidens frondosa cover > 50 % OR Bidens tripartita cover > 50 % OR Persicaria.hydropiper cover > 50 % OR Persicaria mitis cover > 50 %) NOT group Chenopodium glaucum NOT groupRanunculus sceleratus NOT Urtica dioica cover > 25 %
Citation: Šumberová K. (2011): Polygonetum hydropiperis Passarge 1965. – In: Chytrý M. (ed.), Vegetace České republiky. 3. Vodní a mokřadní vegetace [Vegetation of the Czech Republic 3. Aquatic and wetland vegetation], p. 368–371, Academia, Praha.
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