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