be, arr. leuven, quercus rubra, castanea sativa, prunus serotina, juncus tenuis, pinus sylvestris, rhododendron ponticum, potentilla indica, pilosella aurantiaca, silene coronaria, quercus robur, molinia caerulea, bidens frondosa, sorbus aucuparia, amelanchier lamarckii, betula pendula, pinus nigra, oxalis stricta, vaccinium myrtillus, frangula alnus, galinsoga quadriradiata, teucrium scorodonia, geum macrophyllum, fagus sylvatica, calluna vulgaris, robinia pseudoacacia, avenella flexuosa, carex pilulifera, lonicera periclymenum, dryopteris dilatata, juncus effusus, pseudotsuga menziesii, epilobium ciliatum, echinochloa crus-galli, pteridium aquilinum, dryopteris carthusiana, deschampsia flexuosa, lathyrus latifolius, pinus strobus, crassula helmsii, erigeron canadensis, impatiens parviflora, plantago subulata, ilex aquifolium, epipactis helleborine, phytolacca americana, setaria helvola, ceratocapnos claviculata, agrostis capillaris, cytisus scoparius, phytolacca acinosa