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