| WebNameShort | |
| Navicula insociabilis var. dissipatoides Hustedt 1957 |
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| Navicula lesmonensis Hustedt 1957 |
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| Navicula mutica f. nivalis (Ehrenberg) Hustedt 1957 |
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| Navicula oblonga f. subcapitata (Pantocsek) Hustedt 1957 |
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| Navicula paludosa Hustedt 1957 |
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| Navicula peratomus Hustedt 1957 |
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| Navicula protracta f. elliptica Hustedt 1957 |
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| Navicula protractoides Hustedt 1957 |
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| Navicula pupula f. capitata (Hustedt) Hustedt 1957 |
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| Navicula pupula f. rostrata (Hustedt) Hustedt 1957 |
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| Navicula ventosa Hustedt 1957 |
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| Neidium affine (affinis) f. constricta (Frenguelli) Hustedt 1957 |
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| Nitzschia adamata Hustedt 1957 |
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| Nitzschia admissa Hustedt 1957 |
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| Nitzschia agnita Hustedt 1957 |
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| Nitzschia amplectens Hustedt 1957 |
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| Nitzschia frequens Hustedt 1957 |
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| Nitzschia fruticosa Hustedt 1957 |
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| Nitzschia hungarica f. linearis (Grunow in Cleve & Grunow) Hustedt 1957 |
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| Nitzschia manca Hustedt 1957 |
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