| WebNameShort | |
| Navicula divergens f. ornata (Cleve) F.W. Mills 1934 |
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| Navicula elliptica var. hankae (Skvortzow) F.W. Mills 1934 |
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| Navicula elliptica var. ladogensis (Cleve) F.W. Mills 1934 |
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| Navicula elliptica var. magnapunctata (Fontell) F.W. Mills 1934 |
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| Navicula episcopalis var. manschurica (Skvortzow) F.W. Mills 1934 |
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| Navicula episcopalis var. robusta (Fontell) F.W. Mills 1934 |
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| Navicula esox var. major (Hustedt in Schmidt et al.) F.W. Mills 1934 |
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| Navicula exemta var. crabroniformis (Grunow in Schmidt et al.) F.W. Mills 1934 |
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| Navicula exemta var. digrediens (Cleve) F.W. Mills 1934 |
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| Navicula exilis var. genuina (Mayer) F.W. Mills 1934 |
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| Navicula fasciata var. undulata (Mayer) F.W. Mills 1934 |
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| Navicula finnica (Ehrenberg) F.W. Mills 1934 |
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| Navicula fluminensis var. loczyi (Pantocsek) F.W. Mills 1934 |
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| Navicula fulva var. asymmetrica (Dippel) F.W. Mills 1934 |
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| Navicula fusca var. japonica (Cleve) F.W. Mills 1934 |
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| Navicula fusca f. minor (Skvortzow) F.W. Mills 1934 |
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| Navicula fusca var. nigricans (Pantocsek) F.W. Mills 1934 |
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| Navicula fusca var. oamaruensis (Cleve) F.W. Mills 1934 |
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| Navicula fusca var. pseudofusca (Pantocsek) F.W. Mills 1934 |
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| Navicula fusca var. subfusca (Pantocsek) F.W. Mills 1934 |
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