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