| Name | Osmunda cinnamomea f. latipinnula S. F. Blake |
| Authorship | S. F. Blake |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Osmunda cinnamomea Linnaeus |
| GUID | urn:lsid:ipni.org:names:177086-2 |
| Citation | 1913 Rhodora 15: 155 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Osmunda cinnamomea f. latipinnula S. F. Blake |
| Identification made in | [no date] (1) |