| Classification | Fungi: Ascomycota: Erysiphales: Erysiphaceae: Erysiphe | 
| Barcode(s) | 01085185 | 
| Collector | G. B. Rossbach & R. P. Rossbach | 
| Collector number | 170 | 
| Country | United States of America | 
| State | Idaho | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Idaho | 
| Locality | [no additional data] | 
| Date Collected | 1936-07-** | 
| Host | On Polygonum ? aviculare | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/afc6ad5d-d66f-4c91-ac6b-28e1a2e008e4 | 
| Harvard University Herbaria Barcode | 01085185 | 
| Herbarium | FH | 
| Family | Erysiphaceae | 
| Determination |  Erysiphe polygoni de Candolle | 
| Determined by | Sherwood, Martha Allen | 
| Date Determined | 1978 | 
| Determination Remarks |  [filed under] [label name] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Packet | 
| Preparation Method | Dried |