| WebNameShort | |
| Caloneis ventricosa var. kuolensis Cleve-Euler 1934 |
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| Cocconeis cholnokyana Cleve-Euler 1934 |
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| Cocconeis lapponica (Hustedt) Cleve-Euler 1934 |
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| Cocconeis lapponica var. fennica Cleve-Euler 1934 |
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| Cocconeis pinnata (Hustedt) Cleve-Euler 1934 |
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| Cocconeis placentula f. elata Cleve-Euler 1934 |
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| Cymatopleura albaregiensis (Pantocsek) Cleve-Euler 1934 |
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| Cymbella aequalis var. fossilis Cleve-Euler 1934 |
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| Cymbella aequalis var. lapponica Cleve-Euler 1934 |
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| Cymbella aequalis var. oblonga Cleve-Euler 1934 |
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| Cymbella amphioxys var. parallela Cleve-Euler 1934 |
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| Cymbella aspera var. gigantea Cleve-Euler 1934 |
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| Cymbella cuspidata var. schulzii Cleve-Euler 1934 |
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| Cymbella incerta var. subconstricta (Østrup) Cleve-Euler 1934 |
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| Cymbella jonsonii Cleve-Euler 1934 |
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| Cymbella paucistriata Cleve-Euler 1934 |
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| Cymbella perpusilla var. major Cleve-Euler 1934 |
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| Cymbella perpusilla var. major Cleve-Euler 1934 |
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| Cymbella sphaerophora Cleve-Euler 1934 |
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| Cymbella subarctica Cleve-Euler 1934 |
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