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| Coscinodiscus curvatulus var. odontodiscus (Grunow) Hustedt 1928 |
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| Coscinodiscus divisus Hustedt 1928 |
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| Coscinodiscus excentricus var. fasciculata Hustedt 1928 |
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| Coscinodiscus gigas var. praetexta Janisch ex Hustedt 1928 |
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| Coscinodiscus granii var. aralensis (Ostenfeld) Hustedt 1928 |
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| Coscinodiscus hauckii var. mesoleia (Cleve) Hustedt 1928 |
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| Coscinodiscus jonesianus var. commutata (commutatus) (Grunow) Hustedt 1928 |
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| Coscinodiscus lineatus var. irregularis (Tempère & Peragallo) Hustedt 1928 |
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| Coscinodiscus perforatus var. pavillardi (Forti) Hustedt 1928 |
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| Coscinodiscus radiatus f. parva (Grunow) Hustedt 1928 |
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| Coscinodiscus rothii var. subsalsa (Juhlin-Dannfelt) Hustedt 1928 |
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| Coscinodiscus tabularis var. egregius (Rattray) Hustedt 1928 |
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| Cyclotella austriaca (M. Peragallo in Handmann & Schiedler) Hustedt 1928 |
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| Cyclotella meneghiniana var. laevissima (Van Goor) Hustedt 1928 |
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| Cyclotella meneghiniana f. plana (Fricke in Schmidt et al.) Hustedt 1928 |
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| Cyclotella meneghiniana var. pumila (Grunow in Van Heurck) Hustedt 1928 |
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| Cyclotella quadrijuncta (quadriiuncta) (Schröter) Hustedt 1928 |
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| Cyclotella schroeteri auct. plur. according to Hustedt 1928 |
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| Cyclotella striata sensu auct. e. p. according to Hustedt 1928 |
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| Cyclotella striata var. subsalina (Grunow in Van Heurck) Hustedt 1928 |
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| Druridgia compressa (T. West) Hustedt 1928 |
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| Ethmodiscus gazellae (Janisch ex Grunow) Hustedt 1928 |
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| Nitzschia geniculata Hustedt 1928 |
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| Podosira hormoides var. adriatica (Kützing) Hustedt 1928 |
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| Podosira hormoides var. arctica (Cleve ex Cleve & Grunow) Hustedt 1928 |
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| Podosira hormoides var. delicatula (Grunow in Van Heurck) Hustedt 1928 |
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| Stephanodiscus dubius (Fricke in Schmidt et al.) Hustedt 1928 |
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| Stephanodiscus subsalsus (A. Cleve-Euler) Hustedt 1928 |
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| Thalassiosira bioculata var. exigua (Grunow) Hustedt 1928 |
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