be, arr. leuven, quercus robur, quercus rubra, sorbus aucuparia, prunus serotina, lonicera periclymenum, corylus avellana, castanea sativa, acer pseudoplatanus, frangula alnus, betula pendula, dryopteris carthusiana, dryopteris dilatata, sambucus nigra, athyrium filix-femina, alnus glutinosa, fraxinus excelsior, polygonatum multiflorum, fagus sylvatica, betula pubescens, populus canadensis, juncus effusus, urtica dioica, hedera helix, pteridium aquilinum, pinus sylvestris, teucrium scorodonia, molinia caerulea, vaccinium myrtillus, anemone nemorosa, galeopsis tetrahit, holcus mollis, glechoma hederacea, prunus avium, maianthemum bifolium, deschampsia flexuosa, avenella flexuosa, moehringia trinervia, carpinus betulus, lamium galeobdolon, agrostis capillaris, carex pilulifera, convallaria majalis, alnus incana, geum urbanum, angelica sylvestris, holcus lanatus, viburnum opulus, luzula pilosa, ilex aquifolium, ranunculus repens