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