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