nl, oost-zuid-holland, agrostis stolonifera, ranunculus repens, poa trivialis, lolium perenne, persicaria amphibia, glyceria maxima, spirodela polyrhiza, elodea nuttallii, trifolium repens, phragmites australis, elymus repens, holcus lanatus, dactylis glomerata, phalaris arundinacea, ranunculus acris, glyceria fluitans, cirsium arvense, lemna trisulca, sparganium erectum, ceratophyllum demersum, urtica dioica, cerastium holosteoides, rumex acetosa, alopecurus pratensis, lemna gibba, glechoma hederacea, poa annua, phleum pratense, stellaria media, bellis perennis, alopecurus geniculatus, stuckenia pectinata, butomus umbellatus, plantago lanceolata, argentina anserina, poa pratensis, festuca rubra, polygonum aviculare, trifolium pratense, ranunculus sceleratus, cardamine pratensis, plantago major, eleocharis palustris, heracleum sphondylium, ranunculus circinatus, potamogeton pusillus, rumex obtusifolius, myosotis scorpioides, anthriscus sylvestris, arrhenatherum elatius