nl, oost-zuid-holland, phalaris arundinacea, poa trivialis, ranunculus repens, agrostis stolonifera, holcus lanatus, glechoma hederacea, glyceria maxima, urtica dioica, lolium perenne, glyceria fluitans, stellaria media, alopecurus pratensis, dactylis glomerata, elymus repens, persicaria hydropiper, cirsium arvense, persicaria amphibia, trifolium repens, rorippa amphibia, rumex obtusifolius, galium palustre, myosotis scorpioides, ranunculus acris, rumex acetosa, spirodela polyrhiza, sparganium erectum, juncus effusus, iris pseudacorus, cardamine pratensis, phragmites australis, poa annua, lemna trisulca, cerastium holosteoides, alopecurus geniculatus, elodea nuttallii, symphytum officinale, carex acuta, phleum pratense, lythrum salicaria, ceratophyllum demersum, epilobium hirsutum, ranunculus sceleratus, anthriscus sylvestris, plantago major, rumex hydrolapathum, cirsium palustre, calystegia sepium, wolffia arrhiza, equisetum fluviatile, lemna gibba