Rhizosolenia setigera
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Taxonomic Group: Diatom
Trophic Status: Autotrophic
Size Range: 7.6-25 μm wide (LUMCON Guide); 4-20 μm wide (Cupp 1943, Horner 2002)
Key Characteristics: Cells rod-like and conical with a cylindrical apical process that is thickened for some distance from base, then narrowing to a very long, fine, straight, spine; no otaria; numerous small chloroplasts
Confused With:
Toxin: None known