| Classification | Betulaceae: Alnus |
| Harvard University Herbaria Barcode(s) | 00312540 |
| Collector | A. Gray |
| Country | United States of America |
| State | Massachusetts |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Middlesex County: Cambridge |
| Locality | Fresh Pond |
| Date Collected | 1843 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/a7c10b78-64e5-49ad-8a7b-114cd88ce3c6 |
| Harvard University Herbaria Barcode | 00312540 |
| Herbarium | GH |
| Family | Betulaceae |
| Determination | Alnus serrulata var. rugosa (Du Roi) Regel |
| Determined by | Regel, Eduard August von |
| Family | Betulaceae |
| Determination | Alnus rugosa f. emersoniana Fernald |
| Determined by | Fernald, Merritt Lyndon |
| Family | Betulaceae |
| Determination | Alnus incana subsp. rugosa (Du Roi) R. T. Clausen |
| Determination Remarks | [is Current name] |
| Phenology | Fruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
