. _:b75403575 "AlgaeBase id" . _:b75403575 . . "Nitzschia sigma (K\u00FCtz.) W. Smith, 1853" . "Q40d0a8e69ffbc668" . . . _:b75729518 . . "Nitzschia sigma" . _:b76573387 "149213" . . _:b75729518 . . _:b75403575 "Q40d0a8e69ffbc668" . "(K\u00FCtz.) W. Smith, 1853" . "7775694" . _:b76573387 . "Nitzschia sigma" . "Nitzschia sigma" . _:b75403575 . _:b76573387 . _:b75729518 "GBIF id" . "149213" . "76392" . _:b75729518 . _:b76573387 . _:b75729518 "7775694" . . . _:b75403575 . . . _:b76573387 "WoRMS id" . .