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| Navicula elliptica var. costata O'Meara 1875 |
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| Navicula elliptica var. davidsonii O'Meara 1875 |
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| Navicula elliptica var. ovalis (W. Smith) O’Meara 1875 |
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| Navicula elliptica var. parva O'Meara 1875 |
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| Navicula elongata Grunow 1875 |
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| Navicula expleta O'Meara 1875 |
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| Navicula franciscae O'Meara 1875 |
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| Navicula galvagensis O'Meara 1875 |
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| Navicula gibba var. boeckii (Rabenhorst) O'Meara 1875 |
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| Navicula gibba var. parva (Grunow) O'Meara 1875 |
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| Navicula globifera O'Meara 1875 |
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| Navicula gregorii (gregoryi) O'Meara 1875 |
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| Navicula grundleriana O'Meara 1875 |
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| Navicula grunowii O'Meara 1875 |
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| Navicula hibernica O’Meara 1875 |
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| Navicula humerosa var. fuscata (Schumann) O'Meara 1875 |
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| Navicula humerosa var. quadrata (Gregory) O'Meara 1875 |
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| Navicula icostauron (isostauron) (Ehrenberg) O'Meara 1875 |
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| Navicula incisa O'Meara 1875 |
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| Navicula iridis var. affinis (Ehrenberg) O’Meara 1875 |
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