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