be, arr. tongeren, pinus sylvestris, quercus robur, betula pendula, prunus serotina, avenella flexuosa, vaccinium myrtillus, sorbus aucuparia, deschampsia flexuosa, quercus rubra, dryopteris carthusiana, frangula alnus, fagus sylvatica, dryopteris dilatata, pseudotsuga menziesii, calluna vulgaris, molinia caerulea, pinus nigra, carex pilulifera, picea abies, lonicera periclymenum, amelanchier lamarckii, betula pubescens, ceratocapnos claviculata, galium saxatile, ilex aquifolium, castanea sativa, agrostis capillaris, pteridium aquilinum, vaccinium vitis-idaea, rumex angiocarpus, quercus petraea, larix kaempferi, rumex acetosella, melampyrum pratense, rubus idaeus, rubus plicatus, holcus mollis, luzula pilosa, teucrium scorodonia, erica tetralix, carex arenaria, maianthemum bifolium, empetrum nigrum, acer pseudoplatanus, juncus effusus, calamagrostis epigejos, moehringia trinervia, juniperus communis, senecio sylvaticus, pinus strobus