be, arr. leuven, quercus robur, populus canadensis, fraxinus excelsior, corylus avellana, sambucus nigra, urtica dioica, glechoma hederacea, acer pseudoplatanus, alnus glutinosa, lonicera periclymenum, sorbus aucuparia, prunus serotina, quercus rubra, galium aparine, angelica sylvestris, ranunculus repens, polygonatum multiflorum, filipendula ulmaria, heracleum sphondylium, ribes rubrum, geum urbanum, galeopsis tetrahit, poa trivialis, ficaria verna, athyrium filix-femina, hedera helix, crataegus monogyna, anemone nemorosa, silene dioica, juncus effusus, betula pendula, prunus avium, humulus lupulus, dryopteris carthusiana, holcus lanatus, moehringia trinervia, viburnum opulus, dryopteris dilatata, alnus incana, adoxa moschatellina, cardamine pratensis, primula elatior, frangula alnus, circaea lutetiana, stachys sylvatica, lamium galeobdolon, castanea sativa, holcus mollis, symphytum officinale, carpinus betulus