| Name | Equisetum telmateia var. aquatica F. Wirtgen |
| Authorship | F. Wirtgen |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Equisetum telmateia Ehrhart |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Equisetum telmateia var. aquatica F. Wirtgen |
| Identification made in | [no date] (1) |