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