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 |