| WebNameShort | |
| Cocconeis entomon Cleve-Euler 1915 |
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| Cocconeis molesta var. lindbergii Cleve-Euler 1915 |
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| Cocconeis oestrupii Cleve-Euler 1915 |
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| Cocconeis pulchella Cleve-Euler 1915 |
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| Cocconeis speciosa var. cruciata Cleve-Euler 1915 |
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| Coscinodiscus subtilis f. major Cleve-Euler 1915 |
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| Cyclotella abnormis Cleve-Euler 1915 |
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| Cyclotella comta var. spectabilis Cleve-Euler 1915 |
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| Cyclotella dubia var. spinula Cleve-Euler 1915 |
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| Cyclotella kuetzingiana var. abnormis Cleve-Euler 1915 |
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| Cymbella fennica Cleve-Euler 1915 |
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| Cymbella hyalina Cleve-Euler 1915 |
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| Cymbella lanceolata var. inflata Cleve-Euler 1915 |
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| Cymbella lanceolata var. ventricosa Cleve-Euler 1915 |
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| Cymbella recta Cleve-Euler 1915 |
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| Diploneis boldtiana var. robusta Cleve-Euler 1915 |
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| Diploneis chersonensis var. diminuta Cleve-Euler 1915 |
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| Diploneis decipiens Cleve-Euler 1915 |
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| Diploneis decipiens var. parallela Cleve-Euler 1915 |
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| Diploneis entomon f. dinodosa Cleve-Euler 1915 |
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