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