Tetramphora
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Category
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ClassBacillariophyceae
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OrderThalassiophysales
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FamilyCatenulaceae
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Type SpeciesTetramphora ostrearia (Bréb.) Mereschk.
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ContributorPaige M. Kleindl - Jun 2022
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1 Additional Tetramphora species
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Biodata Reference
Tetramphora sulcata
Citations & Links
Citations
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Publication Link: 10.1080/0269249X.2016.1183344
Links
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Index Nominum Algarum
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DiatomBase
Cite This Page
Kleindl, P. (2022). Tetramphora. In Diatoms of North America. Retrieved May 01, 2026, from https://diatoms.org/genera/tetramphora?x-craft-preview=409442409a997390693ff24c7010fd6f1c96fb56f8f091fa016a63de9a54aaccecpiqubknd
Asymmetric Biraphid
Tetramphora
- Valve faces in single plane
- Striae composed of apically or transapically oriented areolae
- Dorsal central area hyaline
Cells are elliptic. Frustules are strongly asymmetric, so that both valve faces lie in the same plane. Valves are moderately to strongly dorsiventral.
The raphe is biarcuate. The proximal raphe ends are ventrally deflected, but they may be obscured by a hyaline area. The hyaline area may give the appearance of dilated to undulate...