"Potamogeton x undulatus" . _:b75712745 . "5301144" . _:b75712745 "GBIF id" . _:b75712745 . . "52369" . _:b75428766 . . . _:b75428766 "52369" . _:b75712745 "5301144" . . "115381" . "Potamogeton x undulatus Wolfg., 1827" . "Potamogeton x undulatus" . _:b75428766 . . _:b75428766 "BDTFX id" . . . _:b75712745 . . _:b75428766 . "Potamogeton x undulatus" . . "Wolfg., 1827" .