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