be, arr. leuven, quercus robur, holcus lanatus, populus canadensis, prunus serotina, agrostis capillaris, urtica dioica, galeopsis tetrahit, ranunculus repens, betula pendula, arrhenatherum elatius, lonicera periclymenum, juncus effusus, alnus glutinosa, sorbus aucuparia, angelica sylvestris, glechoma hederacea, cirsium arvense, frangula alnus, sambucus nigra, quercus rubra, heracleum sphondylium, holcus mollis, rumex acetosa, poa trivialis, galium aparine, corylus avellana, filipendula ulmaria, alopecurus pratensis, stellaria graminea, cirsium palustre, ranunculus acris, crataegus monogyna, anthoxanthum odoratum, fraxinus excelsior, molinia caerulea, hypericum perforatum, dryopteris carthusiana, lysimachia vulgaris, tanacetum vulgare, phalaris arundinacea, achillea millefolium, cardamine pratensis, betula pubescens, dactylis glomerata, acer pseudoplatanus, festuca rubra, lolium perenne, plantago lanceolata, cerastium holosteoides, elymus repens