be, arr. tongeren, prunus serotina, pinus sylvestris, quercus rubra, quercus robur, betula pendula, sorbus aucuparia, avenella flexuosa, deschampsia flexuosa, vaccinium myrtillus, frangula alnus, fagus sylvatica, dryopteris carthusiana, lonicera periclymenum, molinia caerulea, dryopteris dilatata, calluna vulgaris, carex pilulifera, castanea sativa, agrostis capillaris, ilex aquifolium, pseudotsuga menziesii, pteridium aquilinum, betula pubescens, quercus petraea, amelanchier lamarckii, teucrium scorodonia, pinus nigra, holcus mollis, ceratocapnos claviculata, galium saxatile, picea abies, rumex angiocarpus, melampyrum pratense, rumex acetosella, convallaria majalis, rubus idaeus, cytisus scoparius, hedera helix, moehringia trinervia, rubus plicatus, corylus avellana, galeopsis tetrahit, acer pseudoplatanus, populus tremula, holcus lanatus, maianthemum bifolium, robinia pseudoacacia, impatiens parviflora, luzula pilosa, larix kaempferi