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