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