quercus petraea, pteridium aquilinum, atrichum undulatum, avenella flexuosa, holcus mollis, polytrichum formosum, teucrium scorodonia, corylus avellana, frangula alnus, solidago virgaurea, abies alba, acer pseudoplatanus, carpinus betulus, cytisus scoparius, fagus sylvatica, picea abies, prenanthes purpurea