urtica dioica, populus canadensis, ficaria verna, alnus incana, glechoma hederacea, quercus robur, corylus avellana, sambucus nigra, athyrium filix-femina, salix cinerea, aegopodium podagraria, angelica sylvestris, galium aparine, ranunculus repens, ribes nigrum, ribes rubrum, silene dioica, viburnum opulus