Formal definition: Lastrea limbosperma cover > 5 % OR ((Dryopteris dilatata cover > 5 % OR Dryopteris filix-mas cover > 5 %) AND (group Epilobium angustifolium OR group Phegopteris connectilis)) NOT group Galium odoratum NOT group Mercurialis perennis NOT group Ulmus glabra NOT group Veratrum lobelianum NOT Calamagrostis villosa cover > 25 % NOT Molinia caerulea s. l. cover > 25 % NOT Rubus fruticosus agg. cover > 25 %
Citation: Sádlo J. & Petřík P. (2009): Gymnocarpio dryopteridis-Athyrietum filicis-feminae Sádlo et Petřík in Chytrý 2009. – In: Chytrý M. (ed.), Vegetace České republiky. 2. Ruderální, plevelová, skalní a suťová vegetace [Vegetation of the Czech Republic 2. Ruderal, weed, rock and scree vegetation], p. 402–405, Academia, Praha.
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