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