poa trivialis, agrostis stolonifera, alopecurus geniculatus, glyceria maxima, holcus lanatus, ranunculus sceleratus, catabrosa aquatica, cerastium holosteoides, epilobium tetragonum, glyceria fluitans, myosotis scorpioides, ranunculus repens, spirodela polyrhiza, stellaria alsine, glechoma hederacea