nl, oost-groningen, ranunculus repens, holcus lanatus, agrostis stolonifera, rumex acetosa, poa trivialis, phragmites australis, elymus repens, juncus effusus, phalaris arundinacea, glyceria fluitans, lemna minor, agrostis capillaris, glyceria maxima, persicaria amphibia, urtica dioica, elodea nuttallii, lolium perenne, dactylis glomerata, trifolium repens, holcus mollis, plantago lanceolata, festuca rubra, sagittaria sagittifolia, alisma plantago-aquatica, cerastium holosteoides, cirsium arvense, spirodela polyrhiza, achillea millefolium, hydrocharis morsus-ranae, quercus robur, lysimachia vulgaris, ranunculus acris, cardamine pratensis, anthoxanthum odoratum, galium palustre, poa pratensis, glechoma hederacea, sparganium erectum, alopecurus geniculatus, potamogeton natans, equisetum fluviatile, poa annua, tanacetum vulgare, rumex acetosella, alnus glutinosa, polygonum aviculare, lemna trisulca, stellaria media, phleum pratense, lycopus europaeus