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| Anomoeoneis sculpta var. doliolus Frenguelli 1923 |
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| Anomoeoneis sculpta var. temperei Frenguelli 1923 |
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| Caloneis ventricosa var. elliptica Frenguelli 1923 |
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| Gomphonema augur var. capitulata Frenguelli 1923 |
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| Gomphonema clerici Frenguelli 1923 |
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| Gomphonema commutatum f. curta Frenguelli 1923 |
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| Gomphonema constrictum var. schmidtii Frenguelli 1923 |
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| Gomphonema constrictum var. schmidtii Frenguelli 1923 |
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| Gomphonema frickei Frenguelli 1923 |
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| Melosira granulata var. tenuis Frenguelli 1923 |
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| Melosira perpusilla Frenguelli 1923 |
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| Microneis delicatula var. pacis Frenguelli 1923 |
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| Navicula aperta Frenguelli 1923 |
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| Navicula bacterium Frenguelli 1923 |
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| Navicula clericii Frenguelli 1923 |
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| Navicula dactylus var. argentina Frenguelli 1923 |
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| Navicula dactylus var. lata Frenguelli 1923 |
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| Navicula doeringii Frenguelli 1923 |
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| Navicula doeringii var. cryptocephala Frenguelli 1923 |
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| Navicula gracilis f. constricta Frenguelli 1923 |
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