| Name | Navicula plagiostoma Grunow |
| Authorship | Grunow |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Navicula Bory |
| Citation | 1879 J. Roy. Microscop. Soc. London 2: 257 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Navicula plagiostoma Grunow |
| Identification made in | [no date] (1) |