| WebNameShort | |
| Navicula microstauron var. ornata (Otto Müller) Prochazka 1923 |
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| Navicula microstauron var. semicruciata (Otto Müller) Prochazka 1923 |
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| Navicula paucicostata (Rabenhorst) Prochazka 1923 |
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| Navicula producta var. constricta (Hustedt) Prochazka 1923 |
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| Navicula serians f. minor (Grunow in Van Heurck) Prochazka 1923 |
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| Navicula silicula var. genuina (Cleve) Prochazka 1923 |
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| Navicula silicula var. inflata (Grunow) Prochazka 1923 |
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| Navicula silicula var. kjellmanniana (kjellmaniana) (Cleve in Cleve & Grunow) Prochazka 1923 |
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| Navicula silicula var. linearis (Grunow) Prochazka 1923 |
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| Navicula silicula var. minuta (Grunow in Van Heurck) Prochazka 1923 |
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| Navicula silicula var. truncatula (Grunow in Van Heurck) Prochazka 1923 |
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| Navicula silicula var. tumida (Hustedt) Prochazka 1923 |
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| Navicula silicula var. undulata (Grunow in Van Heurck) Prochazka 1923 |
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| Navicula silicula var. ventricosa (Ehrenberg) Prochazka 1923 |
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| Navicula stauroptera var. mesogongyla (Ehrenberg) Prochazka 1923 |
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| Navicula subcapitata var. hilseana (Janisch in Hilse; Janisch in Rabenhorst) Prochazka 1923 |
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| Navicula subcapitata var. subundulata (Otto Müller) Prochazka 1923 |
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| Navicula viridis var. interrupta (Hustedt) Prochazka 1923 |
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| Odontidium hiemale (hyemale) var. minor (Rabenhorst) Proschazka 1923 |
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| Odontidium hiemale (hyemale) var. rotundata (Rabenhorst) Proschazka 1923 |
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