nl, oost-zuid-holland, agrostis stolonifera, ranunculus repens, lolium perenne, poa trivialis, trifolium repens, holcus lanatus, alopecurus geniculatus, stellaria media, poa annua, glyceria fluitans, elymus repens, rumex acetosa, ranunculus acris, phalaris arundinacea, cerastium holosteoides, persicaria hydropiper, persicaria amphibia, dactylis glomerata, ranunculus sceleratus, glyceria maxima, polygonum aviculare, cirsium arvense, alopecurus pratensis, cardamine pratensis, phleum pratense, plantago major, myosotis scorpioides, poa pratensis, juncus articulatus, lemna trisulca, spirodela polyrhiza, eleocharis palustris, bellis perennis, sparganium erectum, capsella bursa-pastoris, elodea nuttallii, ceratophyllum demersum, bromus hordeaceus, glechoma hederacea, argentina anserina, oenanthe fistulosa, rumex obtusifolius, butomus umbellatus, rorippa amphibia, galium palustre, urtica dioica, lemna gibba, rumex crispus, bolboschoenus maritimus, juncus effusus