be, arr. leuven, quercus robur, populus canadensis, arrhenatherum elatius, cirsium arvense, urtica dioica, heracleum sphondylium, glechoma hederacea, holcus lanatus, ranunculus repens, angelica sylvestris, alopecurus pratensis, poa trivialis, crataegus monogyna, galium aparine, galeopsis tetrahit, filipendula ulmaria, agrostis capillaris, sambucus nigra, symphytum officinale, tanacetum vulgare, rumex acetosa, fraxinus excelsior, ranunculus acris, alnus glutinosa, dactylis glomerata, calystegia sepium, phalaris arundinacea, betula pendula, prunus serotina, stellaria graminea, elymus repens, phragmites australis, equisetum arvense, achillea millefolium, geum urbanum, hypericum perforatum, vicia cracca, festuca rubra, centaurea jacea, juncus effusus, lolium perenne, ribes rubrum, anthriscus sylvestris, acer pseudoplatanus, lathyrus pratensis, corylus avellana, plantago lanceolata, cardamine pratensis, cerastium holosteoides, cirsium palustre