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