| Name | Equisetum hyemale f. pumilum (A. A. Eaton) Victorin |
| Authorship | (A. A. Eaton) Victorin |
| Rank | Forma |
| Placed in | Equisetum hyemale Linnaeus |
| Citation | 1927 Contr. Lab. Bot. Univ. Montréal 9: 89 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Equisetum hyemale f. pumilum (A. A. Eaton) Victorin |
| Identification made in | [no date] (2) |