be, arr. leuven, quercus robur, populus canadensis, glechoma hederacea, heracleum sphondylium, arrhenatherum elatius, urtica dioica, holcus lanatus, ranunculus repens, cirsium arvense, poa trivialis, crataegus monogyna, angelica sylvestris, alopecurus pratensis, filipendula ulmaria, agrostis capillaris, galium aparine, galeopsis tetrahit, fraxinus excelsior, symphytum officinale, sambucus nigra, alnus glutinosa, ranunculus acris, rumex acetosa, betula pendula, corylus avellana, dactylis glomerata, prunus serotina, stellaria graminea, juncus effusus, holcus mollis, geum urbanum, phalaris arundinacea, calystegia sepium, tanacetum vulgare, sorbus aucuparia, cirsium palustre, frangula alnus, lonicera periclymenum, vicia cracca, hypericum perforatum, cardamine pratensis, humulus lupulus, acer pseudoplatanus, ribes rubrum, quercus rubra, elymus repens, lysimachia vulgaris, equisetum arvense, anthoxanthum odoratum, ficaria verna