| Name | Equisetum arvense var. diffusum A. A. Eaton ex Gilbert |
| Authorship | A. A. Eaton ex Gilbert |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Equisetum arvense Linnaeus |
| Citation | 1905 Fern Allies 47, 256 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Equisetum arvense var. diffusum A. A. Eaton ex Gilbert |
| Identification made in | [no date] (1) |
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