Orthoseira
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Category
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ClassCoscinodiscophyceae
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OrderOrthosirales
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FamilyOrthoseiraceae
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Type SpeciesOrthoseira americana (Kütz.) S.A.Spauld. and Kociolek
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ContributorSarah Spaulding, Mark Edlund - Dec 2008
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ReviewerSam Rushforth - Jun 2010
Displaying 2 of 2 species
Sorted from smallest to largest by maximum length
1 Additional Orthoseira species
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Biodata Reference
Orthoseira dendroteres
Citations & Links
Citations
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Publication Link: 10.1080/0269249X.1993.9705269
Links
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Index Nominum Algarum
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CAS
Cite This Page
Spaulding, S., Edlund, M. (2008). Orthoseira. In Diatoms of North America. Retrieved April 26, 2025, from https://diatoms.org/genera/orthoseira
Centric
Orthoseira
- Carinoportulae one to several, near midvalve
- Spines marginal, variable in length
- Frustules linked by spines to form short chains
The frustules of Orthoseira are cylindrical and form filamentous colonies linked by marginal spines. The valve surface is flat and possesses one or more unique process, the carinoportula. Internally, the valves may (or may not) have internal 'caverns', positioned at the valve mantle interface. The marginal spines, if present, are...