| Classification | Fungi: Ascomycota: Erysiphales: Erysiphaceae: Erysiphe |
| Harvard University Herbaria Barcode(s) | 00972978 |
| Collector | |
| Country | United States of America |
| State | Massachusetts |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Middlesex County: Newton |
| Locality | [no additional data] |
| Date Collected | 1886-07-** |
| Host | on alder [Alnus sp.] |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/b8cd905f-1658-4158-b348-f3c54fb0d8bf |
| Harvard University Herbaria Barcode | 00972978 |
| Herbarium | FH |
| Family | Erysiphaceae |
| Determination | Erysiphe aggregata (Peck) Farlow |
| Determination Remarks | [is filed under name] [is label name] [is Current name] |
| Annotation Text | young stage |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Packet |
| Preparation Method | Dried |
