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