| WebNameShort | |
| Denticula inflata W. Smith 1856 |
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| Denticula obtusa W. Smith 1856 |
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| Denticula ocellata W. Smith 1856 |
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| Denticula sinuata Thwaites in W. Smith 1856 |
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| Diatoma elongatum W. Smith 1856 |
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| Diatoma elongatum var. beta W. Smith 1856 |
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| Diatoma elongatum var. delta W. Smith 1856 |
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| Diatoma elongatum var. gamma W. Smith 1856 |
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| Diatoma vulgare var. beta W. Smith 1856 |
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| Encyonema caespitosum var. beta W. Smith 1856 |
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| Encyonema prostratum var. beta W. Smith 1856 |
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| Eucampia britannica W. Smith 1856 |
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| Eunotia bidentula W. Smith 1856 |
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| Eupodiscus ralfsii W. Smith 1856 |
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| Fragilaria virescens var. beta W. Smith 1856 |
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| Gomphonema capitatum var. fusticulus (Gregory; W. Smith mss., according to W. Smith) W. Smith 1856 |
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| Gomphonema capitatum var. gamma W. Smith 1856 |
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| Gomphonema naviculoides W. Smith 1856 |
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| Gomphonema rostratum W. Smith 1856 |
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| Grammatophora balfouriana (Greville) W. Smith 1856 |
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