Fragilariophyceae is a group of
pennate diatom
The order Pennales is a traditional subdivision of the heterokont algae known as diatoms. The order is named for the shape of the cell walls (or valves or frustules) of pennate diatoms, which are elongated in valve view. The valves may be linear ...
s lacking a raphe.
Examples
It includes the following genera:
Fragilariales
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Ardissonea''
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Asterionella
''Asterionella'' is a genus of pennate freshwater diatoms. They are frequently found in star-shaped colonies of individuals.
Description
''Asterionella'' average cell size is 60–85 micrometers long and 2–4 micrometers wide.
It forms colo ...
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Asterionellopsis
''Asterionellopsis'' is a genus of diatom
A diatom (Neo-Latin ''diatoma''), "a cutting through, a severance", from el, διάτομος, diátomos, "cut in half, divided equally" from el, διατέμνω, diatémno, "to cut in twain". ...
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Catacombas''
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Diatoma''
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Fragilaria
''Fragilaria'' is a genus of Fresh water, freshwater and Saline water, saltwater diatoms. It is usually a colonial diatom, forming filaments of cells mechanically joined by protrusions on the face and in the center of their valves. The individua ...
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Fragilariforma''
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Grammonema''
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Hyalosynedra''
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Neofragilaria''
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Opephora''
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Pseudostaurosira''
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Punctastriata''
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Staurosira''
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Staurosirella''
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Synedra''
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Synedropsis''
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Tabularia''
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Ulnaria''
Striatellales
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Hyalosira''
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Striatella''
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Toxarium''
Other
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Climacosphenia
''Climacosphenia'' is a genus of marine pennate diatoms in the order Fragilariophyceae
Fragilariophyceae is a group of pennate diatom
The order Pennales is a traditional subdivision of the heterokont algae known as diatoms. The order is ...
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Cyclophora''
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Delphineis''
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Protoraphis''
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Rhabdonema''
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Rhaphoneis''
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Tabellaria
''Tabellaria'' is a genus of freshwater diatoms (Bacillariophyta). They are cuboid in shape, and the frustules (siliceous
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula , most commonly found in natu ...
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Thalassionema''
References
Heterokont classes
{{Diatom-stub