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