| Name | Posidonia |
| Authorship | |
| Rank | Genus |
| NomenclaturalStatus | NomLeg |
| Placed in | Potamogetonaceae |
| Contains | Posidonia oceanica Delile Posidonia sp. |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Posidonia |
| Identification made in | [no date] (1) |
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