be, arr. leuven, quercus robur, sorbus aucuparia, lonicera periclymenum, quercus rubra, prunus serotina, corylus avellana, frangula alnus, sambucus nigra, betula pendula, populus canadensis, urtica dioica, alnus glutinosa, dryopteris dilatata, dryopteris carthusiana, fraxinus excelsior, galeopsis tetrahit, acer pseudoplatanus, polygonatum multiflorum, glechoma hederacea, ranunculus repens, betula pubescens, holcus lanatus, juncus effusus, galium aparine, hedera helix, athyrium filix-femina, angelica sylvestris, crataegus monogyna, pinus sylvestris, holcus mollis, castanea sativa, agrostis capillaris, poa trivialis, humulus lupulus, ribes rubrum, heracleum sphondylium, prunus avium, moehringia trinervia, molinia caerulea, filipendula ulmaria, teucrium scorodonia, geum urbanum, viburnum opulus, amelanchier lamarckii, fagus sylvatica, prunus padus, silene dioica, deschampsia flexuosa, avenella flexuosa, cirsium palustre