be, arr. leuven, quercus rubra, prunus serotina, quercus robur, castanea sativa, sorbus aucuparia, silene coronaria, pinus sylvestris, betula pendula, frangula alnus, amelanchier lamarckii, lonicera periclymenum, calluna vulgaris, agrostis capillaris, molinia caerulea, pilosella aurantiaca, avenella flexuosa, potentilla indica, robinia pseudoacacia, deschampsia flexuosa, holcus lanatus, oxalis corniculata, vaccinium myrtillus, galinsoga quadriradiata, juncus tenuis, carex pilulifera, acer pseudoplatanus, claytonia perfoliata, teucrium scorodonia, corylus avellana, holcus mollis, phytolacca acinosa, rumex angiocarpus, echinochloa crus-galli, juncus effusus, cytisus scoparius, rumex acetosella, erigeron canadensis, fagus sylvatica, sambucus nigra, oxalis stricta, lathyrus latifolius, pteridium aquilinum, dryopteris dilatata, ranunculus repens, rhododendron ponticum, hypericum perforatum, arrhenatherum elatius, polygonatum multiflorum, dryopteris carthusiana, hypochaeris radicata