Orig. (Maas 1959): Cardamineto-Chrysosplenietum alternifolii ass. nov. (Cardamine amara, C. flexuosa)

Syn.: Cardamine amara-Chrysosplenium alternifolium-Gesellschaft Oberdorfer 1977, Chaerophyllo-Petasitetum albi Sýkora et Hadač 1984

Formal definition: (Cardamine amara subsp. amara et austriaca cover > 5 % OR Chrysosplenium alternifolium cover > 5 % OR Petasites albus cover > 5 %) AND group Cardamine amara NOT group Aconitum plicatum NOT group Caltha palustris NOT group Cirsium oleraceum NOT group Lychnis flos-cuculi NOT Chrysosplenium oppositifolium cover > 5 % NOT Cicerbita alpina cover > 5 %