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Category
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Class
Bacillariophyceae
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Order
Naviculales
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Family
Amphipleuraceae
Sorted from smallest to largest by maximum length
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Links
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Index Nominum Algarum
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CAS
Graeff, C.
(2011).
Frickea.
In Diatoms of North America.
Retrieved May 29, 2023, from https://diatoms.org/genera/frickea
Symmetric Biraphid
Frickea
- Distinct longitudinal ribs present
- Ribs extend to the helictoglossa, but do not fuse
- Rows of areolae present between ribs and raphe
- Large, T-shaped distal raphe fissures
- Large, T-shaped proximal raphe fissures
Species within Frickea have valves that are linear-lanceolate with bluntly rounded apices. The striae are comprised of relatively small, round areolae. Internally, a set of longitudinal ribs encloses the full length of the raphe and is continuous through the center of the valve. The longitudinal ribs extend to a linear helictoglossa but...