| WebNameShort | |
| Navicula sphaerophora var. navicularis (Otto Müller) F.W. Mills 1934 |
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| Navicula sphaerophora var. polygramma (Ehrenberg) F.W. Mills 1934 |
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| Navicula sphaerophora f. rostrata (Ehrenberg) F.W. Mills 1934 |
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| Navicula sphaerophora f. truncata (Otto Müller) F.W. Mills 1934 |
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| Navicula stabilis F. Adams collection 1934 |
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| Navicula status auxosporus 1934 |
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| Navicula status primigenus 1934 |
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| Navicula stauroptera var. genuina (Mayer) F.W. Mills 1934 |
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| Navicula stauroptera var. gibba (A. Cleve) F.W. Mills 1934 |
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| Navicula stauroptera var. linearis (Østrup) F.W. Mills 1934 |
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| Navicula stomatophora f. triundulata (Fontell) F.W. Mills 1934 |
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| Navicula stuxbergii var. bicontracta (Østrup) F.W. Mills 1934 |
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| Navicula stuxbergii var. gibbosa (Østrup) F.W. Mills 1934 |
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| Nitzschia sigmatella var. armoricana (Kützing) F.W. Mills 1934 |
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| Pinnularia major (maior) var. pagesii (Heribaud in Heribaud et al.) F.W. Mills 1934 |
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| Pinnularia stuxbergii (Cleve in Cleve & Grunow) F.W. Mills 1934 |
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| Pinnularia stuxbergii var. leptostauron (Cleve; Grunow) F.W. Mills 1934 |
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| Pinnularia stuxbergii var. subcontinua (Cleve; Grunow) F.W. Mills 1934 |
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