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