poa trivialis, ranunculus sceleratus, agrostis stolonifera, glyceria fluitans, glyceria maxima, persicaria hydropiper, alopecurus geniculatus, catabrosa aquatica, bidens cernuus, glechoma hederacea, holcus lanatus, stellaria alsine, veronica beccabunga, carex hirta, oenanthe fistulosa, persicaria amphibia, polygonum aviculare, ranunculus repens, rumex crispus, sparganium erectum