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| Achnanthidium lanceolatum var. ventricosum (Hustedt) Poretzky 1924 |
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| Gomphonema subsalinum Wislouch & Poretzky in Poretzky 1924 |
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| Hantzschia amphioxys var. subsalsa Wislouch & Poretzky in Poretzky 1924 |
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| Hantzschia crassa var. obtusa Wislouch & Poretzky in Poretzky 1924 |
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| Navicula lundstroemii var. subcapitata Wislouch & Poretsky in Poretsky 1924 |
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| Navicula nivalis var. capitata Wislouch & Poretsky in Poretsky 1924 |
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| Neidium amphigomphus f. curtum Poretsky 1924 |
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| Nitzschia aquaea Wislouch & Poretzky in Poretzky 1924 |
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| Nitzschia gracilis var. capitata Wislouch & Poretzky in Poretzky 1924 |
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| Nitzschia hungarica var. pantocsekii Wislouch & Poretzky in Poretzky 1924 |
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| Nitzschia palea var. capitata Wislouch & Poretzky in Poretzky 1924 |
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| Nitzschia vitrea var. scaphiformis Wislouch & Poretsky in Poretsky 1924 |
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| Pinnularia cuneata var. interrupta Wislouch & Poretsky in Poretsky 1924 |
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