be, arr. leuven, prunus serotina, quercus rubra, amelanchier lamarckii, pinus sylvestris, quercus robur, sorbus aucuparia, betula pendula, castanea sativa, pinus nigra, frangula alnus, avenella flexuosa, deschampsia flexuosa, dryopteris dilatata, rhododendron ponticum, calluna vulgaris, molinia caerulea, vaccinium myrtillus, lonicera periclymenum, dryopteris carthusiana, juncus tenuis, potentilla indica, robinia pseudoacacia, silene coronaria, fagus sylvatica, pseudotsuga menziesii, ilex aquifolium, geum macrophyllum, erigeron canadensis, claytonia perfoliata, agrostis capillaris, carex pilulifera, betula pubescens, ceratocapnos claviculata, acer pseudoplatanus, rumex angiocarpus, rumex acetosella, agrostis vinealis, larix kaempferi, senecio inaequidens, sambucus nigra, galinsoga quadriradiata, claytonia sibirica, phytolacca acinosa, oxalis stricta, erica tetralix, corylus avellana, pinus strobus, pinus pinaster, teucrium scorodonia, oxalis corniculata