| WebNameShort | |
| Biddulphia vesiculosa (Agardh) Boyer 1900 |
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| Biddulphia arctica (Brightwell) Boyer 1900 |
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| Biddulphia arctica var. montereyi (Brightwell) Boyer 1900 |
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| Biddulphia grandis (Brightwell) Boyer 1900 |
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| Biddulphia semicircularis (Brightwell) Boyer 1900 |
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| Biddulphia tabellaria (Brightwell) Boyer 1900 |
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| Biddulphia testudo (Brun in Brun & Tempère) Boyer 1900 |
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| Biddulphia antillarum (Cleve) Boyer 1900 |
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| Biddulphia kainii (E.A. Schultze in Kain & E.A. Schultze) Boyer 1900 |
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| Biddulphia acuta (Ehrenberg) Boyer 1900 |
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| Biddulphia condecora (Ehrenberg) Boyer 1900 |
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| Biddulphia obtusa (Ehrenberg) Boyer 1900 |
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| Biddulphia pentacrinus (Ehrenberg) Boyer 1900 |
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| Biddulphia reticulum (Ehrenberg) Boyer 1900 |
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| Hemiaulus solenoceros (Ehrenberg) Boyer 1900 |
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| Biddulphia arctica var. quadrangularis (Greville) Boyer 1900 |
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| Biddulphia elegans (Greville) Boyer 1900 |
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| Biddulphia inelegans (Greville) Boyer 1900 |
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| Biddulphia robertsiana (Greville) Boyer 1900 |
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| Biddulphia tessellata (Greville) Boyer 1900 |
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