be, arr. halle-vilvoorde, quercus robur, quercus rubra, sorbus aucuparia, prunus serotina, acer pseudoplatanus, lonicera periclymenum, dryopteris dilatata, betula pendula, dryopteris carthusiana, frangula alnus, castanea sativa, corylus avellana, fagus sylvatica, sambucus nigra, pinus sylvestris, betula pubescens, fraxinus excelsior, alnus glutinosa, amelanchier lamarckii, molinia caerulea, athyrium filix-femina, hedera helix, urtica dioica, avenella flexuosa, populus canadensis, polygonatum multiflorum, deschampsia flexuosa, ilex aquifolium, juncus effusus, vaccinium myrtillus, pteridium aquilinum, robinia pseudoacacia, glechoma hederacea, prunus avium, galeopsis tetrahit, agrostis capillaris, alnus incana, teucrium scorodonia, holcus mollis, rhododendron ponticum, maianthemum bifolium, moehringia trinervia, ribes rubrum, carex pilulifera, crataegus monogyna, anemone nemorosa, convallaria majalis, geum urbanum, prunus padus, lamium galeobdolon