| Name | Lycopodium clavatum var. megastachyon Fernald & Bissell |
| Authorship | Fernald & Bissell |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Lycopodium clavatum Linnaeus |
| GUID | urn:lsid:ipni.org:names:147243-2 |
| Citation | 1910 Rhodora 12: 53 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Lycopodium clavatum var. megastachyon Fernald & Bissell |
| Identification made in | [no date] (1) |