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