. _:b75446726 . _:b76098970 "GBIF id" . . _:b75446726 . "Potamogeton x billupsii" . . . _:b76098970 "5642456" . "Potamogeton x billupsii" . _:b76098970 . "115339" . _:b75446726 "52139" . "5642456" . _:b76098970 . . _:b75446726 . . . "52139" . _:b76098970 . "Potamogeton x billupsii Fryer, 1893" . _:b75446726 "BDTFX id" . . "Potamogeton x billupsii" . "Fryer, 1893" . .