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Category
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Class
Coscinodiscophyceae
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Order
Melosirales
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Family
Melosiraceae
Sorted from smallest to largest by maximum length
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Spaulding, S.,
Edlund, M.
(2009).
Brevisira.
In Diatoms of North America.
Retrieved May 29, 2023, from https://diatoms.org/genera/brevisira
Centric
Brevisira
- Valve face with central areolate area surrounded by radiating striae
- Rimoportulae or fultoportulae absent
- Valve margins with small, tapered spines
Brevisira is a centric diatom, with central areolae surrounded by radiating striae on the valve face. In contrast to many centric genera, Brevisira lacks both rimoportulae and fultoportulae. The frustules of Brevisira are small, with small tapered spines on the valve margins. Within a single frustule, one valve face may be concave, while...