be, arr. leuven, quercus robur, quercus rubra, castanea sativa, lonicera periclymenum, sorbus aucuparia, acer pseudoplatanus, prunus serotina, corylus avellana, fagus sylvatica, dryopteris dilatata, betula pendula, frangula alnus, dryopteris carthusiana, athyrium filix-femina, pteridium aquilinum, hedera helix, fraxinus excelsior, teucrium scorodonia, betula pubescens, polygonatum multiflorum, sambucus nigra, vaccinium myrtillus, molinia caerulea, pinus sylvestris, anemone nemorosa, juncus effusus, alnus glutinosa, carex pilulifera, ilex aquifolium, convallaria majalis, luzula pilosa, hyacinthoides non-scripta, carpinus betulus, deschampsia flexuosa, lamium galeobdolon, avenella flexuosa, prunus avium, holcus mollis, urtica dioica, maianthemum bifolium, rhododendron ponticum, glechoma hederacea, populus canadensis, dryopteris filix-mas, salix caprea, oxalis acetosella, carex remota, agrostis capillaris, circaea lutetiana, alnus incana