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