Navicula spp.

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Taxonomic Group:Diatom
Trophic Status:Autotrophic
Size Range:14-50 μm wide (Cupp 1943), but also highly variable, depending upon species
Key Characteristics:Valves linear to elliptical, with rounded ends; cells found in stacked ribbons or solitary; single celled species usually have H-shaped chloroplasts or chloroplasts along the side of the nucleus
Confused With:
Toxin:None known