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