agrostis stolonifera, alopecurus geniculatus, glyceria fluitans, persicaria hydropiper, ranunculus repens, bidens tripartita, leersia oryzoides, plantago major, poa annua, poa trivialis, stellaria aquatica, trifolium repens, alopecurus pratensis, galinsoga quadriradiata, juncus effusus, lolium perenne, myosotis scorpioides, rorippa palustris