be, arr. maaseik, quercus rubra, prunus serotina, pinus sylvestris, pinus nigra, quercus robur, betula pendula, sorbus aucuparia, avenella flexuosa, castanea sativa, deschampsia flexuosa, molinia caerulea, vaccinium myrtillus, frangula alnus, dryopteris dilatata, amelanchier lamarckii, calluna vulgaris, dryopteris carthusiana, pseudotsuga menziesii, fagus sylvatica, rhododendron ponticum, juncus tenuis, ceratocapnos claviculata, pinus strobus, agrostis capillaris, erigeron canadensis, carex pilulifera, lonicera periclymenum, rumex angiocarpus, larix kaempferi, rumex acetosella, galinsoga quadriradiata, robinia pseudoacacia, ilex aquifolium, silene coronaria, larix decidua, bidens frondosa, potentilla indica, geum macrophyllum, betula pubescens, juncus effusus, senecio inaequidens, picea abies, teucrium scorodonia, erica tetralix, pilosella aurantiaca, oxalis stricta, claytonia sibirica, claytonia perfoliata, pteridium aquilinum, cytisus scoparius