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