| WebNameShort | |
| Microneis lanceolata (Brebisson in Kutzing) Frenguelli 1923 |
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| Microneis lanceolata var. dubia (Grunow in Cleve & Grunow) Frenguelli 1923 |
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| Microneis lanceolata var. haynaldii (Schaarschmidt-Istvanffi) Frenguelli 1923 |
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| Navicula ambigua var. aubertii (Héribaud in Héribaud et al.) Frenguelli 1923 |
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| Navicula aperta Frenguelli 1923 |
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| Navicula bacterium Frenguelli 1923 |
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| Navicula clericii Frenguelli 1923 |
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| Navicula dactylus var. argentina Frenguelli 1923 |
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| Navicula dactylus var. lata Frenguelli 1923 |
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| Navicula doeringii Frenguelli 1923 |
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| Navicula doeringii var. cryptocephala Frenguelli 1923 |
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| Navicula gracilis f. constricta Frenguelli 1923 |
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| Navicula liburnica var. intermedia Frenguelli 1923 |
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| Navicula microstauron var. subproducta (Grunow in Van Heurck) Frenguelli 1923 |
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| Navicula nobilis var. cuneata Frenguelli 1923 |
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| Navicula ovalis var. oblongella (Nageli) Frenguelli 1923 |
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| Navicula peregrina var. curta Frenguelli 1923 |
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| Navicula perrotetii var. rostrata Frenguelli 1923 |
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| Navicula pygmaea Frenguelli 1923 |
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| Navicula sculpta var. doliolus Frenguelli 1923 |
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