Hannaea
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Category
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ClassFragilariophyceae
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OrderFragilariales
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FamilyFragilariaceae
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Type SpeciesHannaea arcus (Ehrenberg) Patrick in Patrick & Reimer
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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
2 Additional Hannaea species
Click species name to copy BioData reference to the clipboard
Biodata Reference
Hannaea arcus var. amphioxys
Biodata Reference
Hannaea linearis
Citations & Links
Citations
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Publication Link: 10.1139/B09-001
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Publication Link: 10.1080/0269249X.2005.9705632
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Publication Link: 10.1080/0269249X.2005.9705633
Links
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Index Nominum Algarum
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CAS
Cite This Page
Spaulding, S., Edlund, M. (2008). Hannaea. In Diatoms of North America. Retrieved May 01, 2026, from https://diatoms.org/genera/hannaea_?x-craft-preview=409442409a997390693ff24c7010fd6f1c96fb56f8f091fa016a63de9a54aaccecpiqubknd
Araphid
Hannaea
- Valves arched
- Poles capitate to rostrate
- Valve with central ventral swelling
- Faint (ghost) striae near central swelling
Valves are linear and arched. One or two rimoportulae occur on each valve, located near the valve ends. The ventral (concave) side of the valve has a central swelling. Faint, or ghost striae, are often present near the center of the valve.
Hannaea is characteristic of oligotrophic streams and large lakes, where it grows attached in...