| WebNameShort | |
| Navicula placentula f. jenisseyensis (Grunow in Cleve & Grunow) Hustedt 1930 |
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| Navicula placentula f. latiuscula (Grunow in Cleve & Grunow) Hustedt 1930 |
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| Anomoeoneis serians f. thermalis (Grunow in Van Heurck) Hustedt 1930 |
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| Anomoeoneis styriaca (Grunow in Van Heurck) Hustedt 1930 |
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| Caloneis silicula f. curta (Grunow in Van Heurck) Hustedt 1930 |
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| Gomphonema longiceps f. suecica (Grunow in Van Heurck) Hustedt 1930 |
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| Navicula reinhardtii (reinhardti) f. gracilior (Grunow in Van Heurck) Hustedt 1930 |
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| Pinnularia microstauron f. diminuta (Grunow in Van Heurck) Hustedt 1930 |
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| Synedra amphicephala var. austriaca (Grunow in Van Heurck) Hustedt 1930 |
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| Synedra parasitica var. subconstricta (Grunow in Van Heurck) Hustedt 1930 |
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| Gomphonema longiceps var. subclavata (Grunow) Hustedt 1930 |
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| Gyrosigma peisonis (Grunow) Hustedt 1930 |
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| Navicula placentula f. lanceolata (Grunow) Hustedt 1930 |
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| Neidium affine (affinis) f. undulata (Grunow) Hustedt 1930 |
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| Synedra ulna var. ramesi (rameri) (Héribaud) Hustedt 1930 |
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| Pinnularia viridis var. sudetica (Hilse) Hustedt 1930 |
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| Anomoeoneis styriaca var. ventricosa (Hustedt) Hustedt 1930 |
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| Cymbella sinuata f. ovata (Hustedt) Hustedt 1930 |
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| Navicula tuscula f. obtusa (Hustedt) Hustedt 1930 |
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| Navicula tuscula f. rostrata (Hustedt) Hustedt 1930 |
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