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