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