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