Rhoicosphenia
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Category
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ClassBacillariophyceae
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OrderCymbellales
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FamilyRhoicospheniaceae
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Type SpeciesRhoicosphenia abbreviata (Agardh) Lange-Bertalot
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ContributorSarah Spaulding, Mark Edlund - Dec 2008
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ReviewerSam Rushforth - Jun 2010
Displaying 3 of 3 species
Sorted from smallest to largest by maximum length
1 Additional Rhoicosphenia species
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Biodata Reference
Rhoicosphenia lowei
Citations & Links
Citations
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Publication Link: 10.1080/0269249X.2014.961554
Links
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Index Nominum Algarum
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CAS
Cite This Page
Spaulding, S., Edlund, M. (2008). Rhoicosphenia. In Diatoms of North America. Retrieved May 01, 2026, from https://diatoms.org/genera/rhoicosphenia?x-craft-preview=cab8b13ef68d1e257235fd2491770f51dfe0c9a6c0ad3b95411776e5316d603alxhbyabypv
Asymmetric Biraphid
Rhoicosphenia
- One valve with complete raphe
- One valve with small raphe branch (rudimentary raphe)
- Pseudosepta at both poles
- Frustule curved in girdle view
Frustules of Rhoicosphenia are clavate in valve view and heterovalvar. In girdle view, valves are flexed, and curved. As a result of the asymmetry to the transverse axis, the valve face is curved. One valve has a complete raphe with two distinct raphe branches. The other valve has a very small raphe branch on the footpole. Pseudosepta...