be, arr. oostende, agrostis stolonifera, bolboschoenus maritimus, ranunculus sceleratus, phragmites australis, helosciadium nodiflorum, eleocharis palustris, ranunculus repens, apium nodiflorum, poa trivialis, lemna minor, persicaria amphibia, stuckenia pectinata, alopecurus geniculatus, epilobium hirsutum, trifolium repens, glyceria maxima, glyceria fluitans, juncus articulatus, alisma plantago-aquatica, oenanthe fistulosa, sparganium erectum, phalaris arundinacea, cirsium arvense, rumex conglomeratus, zannichellia palustris, juncus bufonius, veronica catenata, plantago major, cotula coronopifolia, argentina anserina, lolium perenne, rumex crispus, schoenoplectus tabernaemontani, lycopus europaeus, myriophyllum spicatum, persicaria hydropiper, butomus umbellatus, myosotis scorpioides, glyceria notata, ceratophyllum demersum, atriplex prostrata, lemna trisulca, galium palustre, urtica dioica, holcus lanatus, poa annua, elodea nuttallii, carex hirta, berula erecta, trifolium fragiferum