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