nl, oost-zuid-holland, agrostis stolonifera, ranunculus repens, poa trivialis, lolium perenne, trifolium repens, elymus repens, phragmites australis, stuckenia pectinata, potamogeton pusillus, elodea nuttallii, alopecurus geniculatus, holcus lanatus, glyceria maxima, spirodela polyrhiza, glyceria fluitans, persicaria amphibia, poa annua, lemna trisulca, stellaria media, cerastium holosteoides, cirsium arvense, ranunculus sceleratus, rumex acetosa, lemna minor, ceratophyllum demersum, ranunculus acris, phalaris arundinacea, dactylis glomerata, polygonum aviculare, sparganium erectum, zannichellia palustris, butomus umbellatus, poa pratensis, ranunculus circinatus, bolboschoenus maritimus, lemna gibba, alopecurus pratensis, eleocharis palustris, urtica dioica, phleum pratense, plantago major, argentina anserina, bromus hordeaceus, cardamine pratensis, capsella bursa-pastoris, sagittaria sagittifolia, myriophyllum spicatum, bellis perennis, agrostis capillaris, scorzoneroides autumnalis