Pleurosigma
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Category
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ClassBacillariophyceae
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OrderNaviculales
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Family
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Type SpeciesPleurosigma angulatum (Quekett) W. Smith 1852
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ContributorMark Edlund, David R.L. Burge - Jun 2015
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Reviewer
Displaying 2 of 2 species
Sorted from smallest to largest by maximum length
5 Additional Pleurosigma species
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Biodata Reference
Pleurosigma angulatum
Biodata Reference
Pleurosigma australe
Biodata Reference
Pleurosigma elongatum
Biodata Reference
Pleurosigma salinarum
Biodata Reference
Pleurosigma salinarum var. boyeri
Citations & Links
Citations
Links
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Index Nominum Algarum
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CAS
Cite This Page
Edlund, M., Burge, D. (2015). Pleurosigma. In Diatoms of North America. Retrieved May 01, 2026, from https://diatoms.org/genera/pleurosigma?x-craft-preview=409442409a997390693ff24c7010fd6f1c96fb56f8f091fa016a63de9a54aaccecpiqubknd
Symmetric Biraphid
Pleurosigma
- Valves sigmoid
- Raphe sigmoid
- Striae decussate
Valves are elongate and sigmoid. Striae are composed of evenly spaced decussate rows. The rows are arranged in 3 patterns: a trans-apical row and two opposing oblique rows. Internally, the areolae are occluded by hymenes. The raphe is strongly sigmoid, with a narrow axial area. The sternum is thickened equally on both sides. The raphe...