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