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