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| Nitzschia constricta var. similis Grunow in Cleve & Grunow 1880 |
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| Nitzschia constricta var. subconstricta Grunow in Cleve & Grunow 1880 |
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| Nitzschia denticula Grunow in Cleve & Grunow 1880 |
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| Nitzschia distans var. australiensis Grunow in Cleve & Grunow 1880 |
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| Nitzschia distans var. eximia Grunow in Cleve & Grunow 1880 |
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| Nitzschia distans var. sigmoidea Grunow in Cleve & Grunow 1880 |
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| Nitzschia distans var. subdilatata Grunow in Cleve & Grunow 1880 |
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| Nitzschia dubia var. siberica Grunow in Cleve & Grunow 1880 |
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| Nitzschia epithemoides (epithemioides) Grunow in Cleve & Grunow 1880 |
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| Nitzschia eximia Grunow in Cleve & Grunow 1880 |
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| Nitzschia febigerii Grunow in Cleve & Grunow 1880 |
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| Nitzschia fluminensis var. angusta Grunow in Cleve & Grunow 1880 |
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| Nitzschia fluminensis var. subundulata Grunow in Cleve & Grunow 1880 |
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| Nitzschia fossilis Grunow in Cleve & Grunow 1880 |
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| Nitzschia fragilarioides Grunow in Cleve & Grunow 1880 |
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| Nitzschia frigida Grunow in Cleve & Grunow 1880 |
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| Nitzschia fusiformis Grunow in Cleve & Grunow 1880 |
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| Nitzschia graeffii (graefei) var. bicuneata Grunow in Cleve & Grunow 1880 |
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| Nitzschia hantzschiana var. glacialis Grunow in Cleve & Grunow 1880 |
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| Nitzschia hungarica var. genuina Grunow in Cleve & Grunow 1880 |
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