_:b75441881 "BDTFX id" . . _:b75441881 . . _:b75883941 . "Potamogeton praelongus var. angustifolius" . "Potamogeton praelongus var. angustifolius Rouy, 1912" . . "150034" . "Rouy, 1912" . _:b75441881 . _:b75883941 "9239884" . _:b75883941 "GBIF id" . . _:b75883941 . _:b75441881 . "52297" . . . . . "Potamogeton praelongus var. angustifolius" . _:b75883941 . _:b75441881 "52297" . "9239884" .