| WebNameShort | |
| Gomphonema longiceps f. montana (Schumann) Hustedt 1930 |
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| Achnanthes exigua var. constricta (Torka) Hustedt 1930 |
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| Campylodiscus clypeus var. bicostata (bicostatus) (W. Smith in Roper) Hustedt 1930 |
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| Eunotia monodon var. major (W. Smith) Hustedt 1930 |
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| Surirella ovata var. pinnata (W. Smith) Hustedt 1930 |
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| Synedra parasitica (W. Smith) Hustedt 1930 |
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| Biddulphia tridentata ‘Weisse’ according to Hustedt 1930 |
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| Navicula graciloides A. Mayer in Hustedt 1930 |
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| Achnanthes clevei var. rostrata Hustedt 1930 |
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| Achnanthes conspicua var. brevistriata Hustedt 1930 |
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| Achnanthes dispar var. angulata Hustedt 1930 |
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| Achnanthes kolbei Hustedt 1930 |
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| Achnanthes lacunarum Hustedt 1930 |
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| Achnanthes ploenensis Hustedt 1930 |
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| Amphiprora costata Hustedt 1930 |
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| Amphora holsatica Hustedt 1930 |
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| Caloneis ladogensis var. densestriata Hustedt 1930 |
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| Caloneis schumanniana var. lancettula Hustedt 1930 |
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| Caloneis silicula var. peisonis Hustedt 1930 |
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| Diploneis pseudovalis (pseudo-ovalis) Hustedt 1930 |
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