be, arr. antwerpen, prunus serotina, quercus rubra, juncus tenuis, amelanchier lamarckii, bidens frondosa, pinus sylvestris, crassula helmsii, rhododendron ponticum, silene coronaria, castanea sativa, geum macrophyllum, galinsoga quadriradiata, quercus robur, claytonia perfoliata, pilosella aurantiaca, erigeron canadensis, potentilla indica, betula pendula, lepidium didymum, molinia caerulea, potentilla recta, senecio inaequidens, echinochloa crus-galli, sorbus aucuparia, calluna vulgaris, erigeron sumatrensis, epilobium ciliatum, robinia pseudoacacia, lepidium virginicum, claytonia sibirica, frangula alnus, lathyrus latifolius, pinus nigra, ceratocapnos claviculata, avenella flexuosa, oxalis stricta, juncus canadensis, agrostis capillaris, setaria helvola, melilotus albus, deschampsia flexuosa, erica tetralix, matricaria discoidea, reynoutria japonica, oxalis corniculata, quercus palustris, oenothera glazioviana, phytolacca acinosa, juncus effusus, rumex acetosella