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