be, arr. leuven, ranunculus repens, urtica dioica, holcus lanatus, cirsium arvense, poa trivialis, populus canadensis, heracleum sphondylium, quercus robur, arrhenatherum elatius, alopecurus pratensis, prunus serotina, symphytum officinale, juncus effusus, lolium perenne, galium aparine, bidens frondosa, rumex acetosa, glechoma hederacea, quercus rubra, agrostis stolonifera, ranunculus acris, phalaris arundinacea, cardamine pratensis, agrostis capillaris, phragmites australis, filipendula ulmaria, rumex obtusifolius, alnus glutinosa, lolium multiflorum, calystegia sepium, dactylis glomerata, galinsoga quadriradiata, trifolium repens, galeopsis tetrahit, sambucus nigra, elymus repens, lythrum salicaria, angelica sylvestris, stellaria media, lysimachia vulgaris, persicaria hydropiper, plantago lanceolata, tanacetum vulgare, equisetum palustre, iris pseudacorus, stellaria graminea, lycopus europaeus, cerastium fontanum, humulus lupulus, festuca rubra