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