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