echinochloa crus-galli, lemna minor, cyperus fuscus, trifolium repens, eleocharis palustris, juncus inflexus, poa annua, cynodon dactylon, polypogon viridis, trifolium fragiferum, polygonum aviculare, ranunculus repens, alisma lanceolatum, azolla filiculoides, bidens tripartita, mentha aquatica, persicaria hydropiper, verbena officinalis