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