be, arr. leuven, populus canadensis, heracleum sphondylium, filipendula ulmaria, angelica sylvestris, arrhenatherum elatius, alopecurus pratensis, cirsium arvense, urtica dioica, symphytum officinale, ranunculus repens, holcus lanatus, glechoma hederacea, galium aparine, poa trivialis, phalaris arundinacea, galeopsis tetrahit, quercus robur, rumex acetosa, calystegia sepium, ranunculus acris, stellaria graminea, carex acuta, cirsium palustre, phragmites australis, lathyrus pratensis, juncus effusus, iris pseudacorus, lythrum salicaria, alnus glutinosa, vicia cracca, cardamine pratensis, equisetum palustre, agrostis capillaris, dactylis glomerata, tanacetum vulgare, silene flos-cuculi, lysimachia vulgaris, sambucus nigra, persicaria amphibia, crataegus monogyna, ficaria verna, rumex obtusifolius, fraxinus excelsior, lolium perenne, cerastium fontanum, humulus lupulus, plantago lanceolata, anthriscus sylvestris, elymus repens, centaurea jacea