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