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| Navicula tschuktschorum Cleve 1883 |
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| Navicula valida var. minuta Cleve 1883 |
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| Navicula vegae Cleve 1883 |
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| Navicula vegae var. subconstricta Grunow in Cleve 1883 |
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| Navicula weissflogii A. Schmidt 1883 |
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| Navicula zostereti var. acutiuscula (Gregory) Cleve 1883 |
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| Navicula zostereti f. genuina Cleve 1883 |
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| Nitzschia brebissonii var. borealis Grunow in Cleve 1883 |
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| Nitzschia diluvialis Cleve 1883 |
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| Nitzschia gelida Cleve & Grunow 1883 |
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| Nitzschia hybrida var. kryokonites (cryokonites) Cleve 1883 |
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| Nitzschia hyperborea var. nystroemii (Grunow in Cleve & Möller) Cleve 1883 |
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| Nitzschia kryophila Cleve 1883 |
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| Nitzschia labuensis Cleve 1883 |
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| Nitzschia laevissima Grunow in Cleve 1883 |
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| Nitzschia lanceolata var. pygmaea Cleve 1883 |
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| Nitzschia punctata var. diluviana (Cleve in Cleve & Jentzsch) Cleve 1883 |
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| Nitzschia pungens Grunow in Cleve 1883 |
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| Nitzschia recta var. polaris (Grunow in Cleve & Möller) Grunow in Cleve 1883 |
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| Nitzschia scabra Cleve 1883 |
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