be, arr. oostende, agrostis stolonifera, helosciadium nodiflorum, bolboschoenus maritimus, eleocharis palustris, apium nodiflorum, alopecurus geniculatus, ranunculus sceleratus, trifolium repens, glyceria fluitans, ranunculus repens, oenanthe fistulosa, poa trivialis, phragmites australis, trifolium fragiferum, juncus articulatus, cotula coronopifolia, lemna minor, lolium perenne, persicaria amphibia, juncus gerardii, stuckenia pectinata, glyceria notata, schoenoplectus tabernaemontani, juncus bufonius, plantago major, argentina anserina, rumex conglomeratus, zannichellia palustris, atriplex prostrata, ranunculus sardous, eleocharis uniglumis, rumex crispus, myriophyllum spicatum, alisma plantago-aquatica, elymus repens, holcus lanatus, poa annua, sparganium erectum, galium palustre, spergularia marina, cirsium arvense, butomus umbellatus, triglochin palustris, juncus effusus, lemna trisulca, veronica catenata, ceratophyllum demersum, hordeum secalinum, polygonum aviculare, ranunculus trichophyllus