text: allium ursinum, corylus avellana, fraxinus excelsior, populus canadensis, ulmus hollandica, acer pseudoplatanus, sambucus nigra, lonicera periclymenum, arum maculatum, athyrium filix-femina, castanea sativa, crataegus laevigata, fagus sylvatica, moehringia trinervia, polygonatum multiflorum