Actinocyclus
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Category
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ClassCoscinodiscophyceae
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OrderCoscinodiscales
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FamilyHemidiscaeae
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Type SpeciesActinocyclus octonarius Ehrenberg
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ContributorSarah Spaulding, Mark Edlund - Jan 2009
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ReviewerSam Rushforth - Apr 2010
Displaying 1 of 1 species
Sorted from smallest to largest by maximum length
Citations & Links
Citations
Links
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Index Nominum Algarum
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CAS
Cite This Page
Spaulding, S., Edlund, M. (2009). Actinocyclus. In Diatoms of North America. Retrieved May 01, 2026, from https://diatoms.org/genera/actinocyclus?x-craft-preview=409442409a997390693ff24c7010fd6f1c96fb56f8f091fa016a63de9a54aaccecpiqubknd
Centric
Actinocyclus
- Pseudonodulus present (may be visible only with SEM)
- Several rimoportulae present at margin of valve face
Frustules of Actinocyclus are centric in outline with a relatively narrow mantle. The valve face may be flat or may have concentric undulations in the valve surfaces. Internal openings of rimoportulae are often visible in LM. The genus is distinguished by the presence of a pseudonodulus, a structure found in the three genera...