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