echinochloa crus-galli, xanthium strumarium, alisma plantago-aquatica, althaea officinalis, anthoxanthum repens, bidens tripartita, cirsium arvense, inula britannica, lysimachia nummularia, lythrum salicaria, oenanthe aquatica, persicaria amphibia, phalaris arundinacea, polygonum bellardii, rorippa palustris, rumex stenophyllus, sonchus arvensis, stachys palustris