be, arr. tongeren, pinus sylvestris, prunus serotina, quercus robur, betula pendula, avenella flexuosa, quercus rubra, sorbus aucuparia, deschampsia flexuosa, vaccinium myrtillus, frangula alnus, dryopteris dilatata, dryopteris carthusiana, calluna vulgaris, agrostis capillaris, pseudotsuga menziesii, fagus sylvatica, amelanchier lamarckii, pinus nigra, molinia caerulea, carex pilulifera, rumex angiocarpus, ceratocapnos claviculata, rumex acetosella, galium saxatile, castanea sativa, lonicera periclymenum, betula pubescens, ilex aquifolium, agrostis vinealis, picea abies, holcus mollis, holcus lanatus, hypericum perforatum, festuca filiformis, rubus gratus, galeopsis tetrahit, cytisus scoparius, teucrium scorodonia, pteridium aquilinum, rubus plicatus, larix kaempferi, senecio sylvaticus, quercus petraea, erigeron canadensis, robinia pseudoacacia, digitalis purpurea, erica tetralix, calamagrostis epigejos, vaccinium vitis-idaea, juncus tenuis