. _:b75422872 . _:b75422872 "AlgaeBase id" . . "Closterium ulna var. recurvatum" . "143629" . _:b76733191 . _:b76733191 "706578" . "Closterium ulna var. recurvatum (Roll) Willi Krieger, 1935" . _:b76733191 . . _:b76733191 . . _:b76733191 "WoRMS id" . "706578" . . _:b75422872 "143629" . "Closterium ulna var. recurvatum" . . . "999389" . . . "(Roll) Willi Krieger, 1935" . _:b75422872 . _:b75422872 .