aln02 | The floristic and ecological variation in this alliance justifies recognition of more than one alliance. In Mecklenburg-Vorpommern alone, Clausnitzer (in Berg et al. 2001, 2004) recognised two orders and four alliances, distinguished floristically and ecologically. (JD).
Athyrio-Alnion glutinosae Passarge in Passarge et G. Hofmann 1968
Athyrio-Alnion glutinosae Passarge 1968
Irido-Alnion glutinosae Passarge in Passarge et G. Hofmann 1968
– aln03 Berg et al. (2004) prefer to consider this unit as an alliance in its own right. (LM).