| Name | Alnus rugosa f. emersoniana Fernald |
| Authorship | Fernald |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Alnus rugosa (Du Roi) Sprengel |
| GUID | urn:lsid:ipni.org:names:300053-2 |
| Citation | 1945 Rhodora 47: 348 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Alnus rugosa f. emersoniana Fernald |
| Identification made in | [no date] (6) |
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