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| Cymbella ehrenbergii var. stauroneiformis Rabenhorst 1864 |
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| Cymbella ehrenbergii var. stauroneiformis Rabenhorst 1864 |
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| Cymbella gastroides var. helvetica (Kützing) Rabenhorst 1864 |
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| Cymbella gracilis var. laevis (Naegeli in Kutzing) Rabenhorst 1864 |
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| Cymbella gracilis var. minuta (Hilse in Rabenhorst) Rabenhorst 1864 |
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| Cymbella gracilis var. robustior Rabenhorst 1864 |
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| Cymbella gracilis var. scotica (W. Smith) Rabenhorst 1864 |
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| Cymbella maculata var. major Rabenhorst 1864 |
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| Cymbella orsiniana Rabenhorst 1864 |
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| Cymbella smithii Rabenhorst 1864 |
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| Denticula elegans f. minor Rabenhorst 1864 |
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| Denticula frigida f. major Rabenhorst 1864 |
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| Desmogonium kuetzingii Rabenhorst 1864 |
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| Diadesmis gallica var. minor Grunow ex Rabenhorst 1864 |
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| Diatoma ehrenbergii f. grandis (W. Smith) Rabenhorst 1864 |
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| Diatoma ehrenbergii f. intermedia Rabenhorst 1864 |
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| Diatoma elongatum var. abbreviatum Rabenhorst 1864 |
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| Diatoma hyalinum f. minima (Ralfs) Rabenhorst 1864 |
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| Diatoma hyalinum f. minor Rabenhorst 1864 |
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| Diatoma vulgare var. cuneata (Ehrenberg) Rabenhorst 1864 |
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