| Classification | Fungi: Ascomycota: Erysiphales: Erysiphaceae: Erysiphe |
| Classification 1 | Fungi: Ascomycota: Erysiphales: Erysiphaceae: Microsphaera |
| Harvard University Herbaria Barcode(s) | 00972665 |
| Collector | J. L. Russell |
| Collector number | 395 |
| Country | United States of America |
| State | Massachusetts |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts |
| Locality | [no additional data] |
| Substrate | fol. |
| Host | Q. pedunculata [Quercus pedunculata] |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/2ec5a3a4-a552-4159-965a-9d9f06e92526 |
| Harvard University Herbaria Barcode | 00972665 |
| Herbarium | FH |
| Family | Erysiphaceae |
| Determination | Erysiphe penicillata (Wallroth) Link |
| Determination Remarks | [is filed under name] [is label name] |
| Family | Erysiphaceae |
| Determination | Compare Microsphaera extensa Cooke & Peck |
| Determined by | Braun, Uwe |
| Date Determined | 1982-07-22 |
| Determination Remarks | [0] [is Current name] |
| Annotation Text | s. lat.; Material immature |
| Subcollection | Curtis Herbarium |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Packet |
| Preparation Method | Dried |
