be, arr. leuven, quercus robur, quercus rubra, prunus serotina, sorbus aucuparia, lonicera periclymenum, corylus avellana, populus canadensis, castanea sativa, alnus glutinosa, sambucus nigra, betula pendula, acer pseudoplatanus, frangula alnus, fraxinus excelsior, athyrium filix-femina, urtica dioica, juncus effusus, polygonatum multiflorum, dryopteris carthusiana, dryopteris dilatata, alnus incana, angelica sylvestris, glechoma hederacea, galeopsis tetrahit, anemone nemorosa, filipendula ulmaria, hedera helix, molinia caerulea, ranunculus repens, holcus lanatus, prunus avium, pinus sylvestris, betula pubescens, heracleum sphondylium, ribes rubrum, teucrium scorodonia, holcus mollis, agrostis capillaris, lysimachia vulgaris, viburnum opulus, lamium galeobdolon, cirsium palustre, galium aparine, fagus sylvatica, poa trivialis, amelanchier lamarckii, salix caprea, crataegus monogyna, robinia pseudoacacia, pteridium aquilinum