Chaetoceros didymus
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Taxonomic Group: Diatom
Trophic Status: Autotrophic
Size Range: 19-22.5 μm wide (LUMCON Guide); 12-34 μm wide (Cupp 1943, Horner 2002); 10-40 μm wide (Tomas 1997)
Key Characteristics: Setae arise from corners of cells, crossing at their base or sometimes far outside the chain; valves with a semicircular protuberance in the center; two chloroplasts per cell, pressed against the valves, each with a pyrenoid located in the protuberance
Confused With:
Toxin: None known