| WebNameShort | |
| Navicula lagerheimii (Cleve) M. Peragallo 1903 |
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| Navicula lanceolata var. minuta (Rabenhorst) M. Peragallo 1903 |
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| Navicula latiuscula var. africana (Cleve) M. Peragallo 1903 |
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| Navicula liber var. holuboi (holubyi) (Pantocsek) M. Peragallo 1903 |
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| Navicula liber var. relegata (Cleve) M. Peragallo 1903 |
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| Navicula liber f. tenuistriata (Cleve) M. Peragallo 1903 |
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| Navicula lignitica (Cleve) M. Peragallo 1903 |
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| Navicula limosa var. alpina (Cleve) M. Peragallo 1903 |
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| Navicula limosa var. capitata (Lagerstedt) M. Peragallo 1903 |
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| Navicula lyra f. abnormis (Grunow in Schmidt et al.) M. Peragallo 1903 |
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| Navicula major var. asymetrica (Cleve) M. Peragallo 1903 |
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| Navicula major f. conjugata (Turpin) M. Peragallo 1903 |
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| Navicula major var. crassa (Rabenhorst; Rabenhorst) M. Peragallo 1903 |
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| Navicula major var. linearis (Cleve) M. Peragallo 1903 |
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| Navicula major var. turgidula (Cleve) M. Peragallo 1903 |
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| Navicula mesogongyla var. interrupta (Cleve) M. Peragallo 1903 |
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| Navicula mesolepta var. tenuis (A. Cleve) M. Peragallo 1903 |
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| Navicula musca var. eurynota (Cleve) M. Peragallo 1903 |
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| Navicula musca var. marginopunctata (Grove & Sturt) M. Peragallo 1903 |
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| Navicula nodosa var. capitata (Cleve) M. Peragallo 1903 |
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