| WebNameShort | |
| Achnanthes acus Simonsen 1960 |
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| Achnanthes pseudobliqua Simonsen 1960 |
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| Amphora abludens Simonsen 1960 |
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| Amphora flebilis Simonsen 1960 |
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| Amphora longiceps Simonsen 1960 |
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| Amphora pseudohyalina Simonsen 1960 |
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| Hantzschia baltica Simonsen 1960 |
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| Hustedtiella baltica Simonsen 1960 |
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| Navicula aberrans Simonsen 1960 |
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| Navicula decussepunctata Simonsen 1960 |
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| Navicula gemmifera Simonsen 1960 |
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| Nitzschia improvisa Simonsen 1960 |
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| Nitzschia subfrequens Simonsen 1960 |
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