Fraxinus excelsior-Alnus glutinosa formations of springs and small streams of Atlantic, sub-Atlantic and sub-continental middle Europe, usually dominated by ashes, with Carex remota, C. pendula, C. strigosa, Equisetum telmateia, Rumex sanguineus, Lysimachia nemorum, Cardamine amara, Chrysosplenium oppositifolium, C. alternifolium, Impatiens noli-tangere, Ribes rubrum.