| Classification | Fungi: Ascomycota: Erysiphales: Erysiphaceae: Erysiphe |
| Harvard University Herbaria Barcode(s) | 00972991 |
| Collector | L. Bonar |
| Country | United States of America |
| State | California |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: California: Humboldt County |
| Locality | Willow Camp |
| Date Collected | 1922-09-03 |
| Container | California Fungi |
| Host | On Alnus rubra Bong. |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/b7d51bff-bf93-494e-ada8-7500137498a1 |
| Harvard University Herbaria Barcode | 00972991 |
| Herbarium | FH |
| Previous ownership | [ex] Herbarium of the University of California |
| Family | Erysiphaceae |
| Determination | Erysiphe aggregata (Peck) Farlow |
| Determined by | Bonar, Lee |
| Determination Remarks | [0] [is label name] |
| Family | Erysiphaceae |
| Determination | Erysiphe aggregata (Peck) Farlow |
| Determination Remarks | [is filed under name] [is Current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Packet |
| Preparation Method | Dried |
