be, arr. leuven, populus canadensis, quercus robur, heracleum sphondylium, urtica dioica, ranunculus repens, arrhenatherum elatius, glechoma hederacea, holcus lanatus, poa trivialis, galium aparine, sambucus nigra, filipendula ulmaria, fraxinus excelsior, alopecurus pratensis, angelica sylvestris, cirsium arvense, alnus glutinosa, galeopsis tetrahit, corylus avellana, prunus serotina, symphytum officinale, quercus rubra, phalaris arundinacea, calystegia sepium, crataegus monogyna, ranunculus acris, dactylis glomerata, acer pseudoplatanus, ficaria verna, rumex acetosa, agrostis capillaris, tanacetum vulgare, humulus lupulus, rumex obtusifolius, juncus effusus, ribes rubrum, alnus incana, lolium perenne, geum urbanum, silene dioica, prunus avium, elymus repens, aegopodium podagraria, sorbus aucuparia, cardamine pratensis, anthriscus sylvestris, equisetum arvense, stellaria graminea, lonicera periclymenum, phragmites australis