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| Pinnularia cellesensis (Heribaud & M. Peragallo in Heribaud) F.W. Mills 1934 |
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| Pinnularia dactylus var. argentina (Frenguelli) F.W. Mills 1934 |
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| Pinnularia dactylus var. lata (Frenguelli) F.W. Mills 1934 |
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| Pinnularia danensis (Stiles) F.W. Mills 1934 |
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| Pinnularia dariana (Schmidt in Schmidt et al.) F.W. Mills 1934 |
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| Pinnularia dariana var. miocenica (Heribaud & M. Peragallo in Heribaud) F.W. Mills 1934 |
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| Pinnularia decrescens (Heribaud) F.W. Mills 1934 |
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| Pinnularia decurrens var. curtecostata (curtestriata) (Heribaud) F.W. Mills 1934 |
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| Pinnularia degenii (Pantocsek) F.W. Mills 1934 |
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| Pinnularia delpiroui (M. Peragallo in Heribaud et al.) F.W. Mills 1934 |
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| Pinnularia digitoradiata (digito-radiata) var. cyprinus (Ehrenberg) F.W. Mills 1934 |
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| Pinnularia directa var. subtilis (Gregory) F.W. Mills 1934 |
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| Pinnularia divergens var. bacillaris (M. Peragallo in Tempère & Peragallo) F.W. Mills 1934 |
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| Pinnularia divergens var. constricta (M. Peragallo in Tempère & Peragallo) F.W. Mills 1934 |
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| Pinnularia divergens var. prolongata (Brun & M. Peragallo in Heribaud) F.W. Mills 1934 |
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| Pinnularia doeringii (Frenguelli) F.W. Mills 1934 |
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| Pinnularia doeringii var. cryptocephala (Frenguelli) F.W. Mills 1934 |
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| Pinnularia esox var. florentina (Grunow in Cleve & Möller) F.W. Mills 1934 |
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| Pinnularia esox var. recta (Heribaud) F.W. Mills 1934 |
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| Pinnularia essexii (M. Peragallo in Tempère & Peragallo) F.W. Mills 1934 |
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