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