nl, oost-zuid-holland, lolium perenne, poa trivialis, agrostis stolonifera, ranunculus repens, trifolium repens, poa annua, dactylis glomerata, holcus lanatus, phalaris arundinacea, elymus repens, plantago major, stellaria media, urtica dioica, ranunculus acris, glechoma hederacea, polygonum aviculare, rumex acetosa, glyceria fluitans, bellis perennis, cirsium arvense, cardamine pratensis, rumex obtusifolius, glyceria maxima, cerastium holosteoides, capsella bursa-pastoris, persicaria amphibia, ceratophyllum demersum, alopecurus pratensis, sparganium erectum, poa pratensis, phleum pratense, epilobium hirsutum, alopecurus geniculatus, phragmites australis, plantago lanceolata, festuca rubra, anthriscus sylvestris, spirodela polyrhiza, lemna gibba, butomus umbellatus, lamium album, matricaria discoidea, heracleum sphondylium, trifolium pratense, sagina procumbens, lemna trisulca, persicaria hydropiper, myosotis scorpioides, argentina anserina, ranunculus sceleratus