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