| Classification | Fungi: Ascomycota: Erysiphales: Erysiphaceae: Erysiphe |
| Classification 1 | Fungi: Ascomycota: Erysiphales: Erysiphaceae: Microsphaera |
| Harvard University Herbaria Barcode(s) | 01122145 |
| Type Status | Holotype |
| Collector | H. C. Greene |
| Collector number | HCG 838 |
| Country | United States of America |
| State | Wisconsin |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Wisconsin: Dane County: Madison |
| Locality | [no additional data] |
| Date Collected | 1944-09-20 |
| Host | On Quercus velutina |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/803ef0ac-474f-481e-b27a-348efe3b8306 |
| Harvard University Herbaria Barcode | 01122145 |
| Herbarium | FH |
| Previous ownership | From the Herbarium of the University of Wisconsin |
| Family | Erysiphaceae |
| Type Status | Holotype |
| Holotype of | Erysiphe schweinitziana M. Bradshaw, U. Braun & Quijada |
| Determination Remarks | [filed under] [current name] |
| Taxon Reference | (for Erysiphe schweinitziana M. Bradshaw, U. Braun & Quijada) Forest Pathol. 2025. 55: e70005, 25. |
| Family | Erysiphaceae |
| Determination | Microsphaera abbreviata Peck |
| Determined by | Braun, Uwe |
| Date Determined | 1982-02-08 |
| Family | Erysiphaceae |
| Determination | Erysiphe abbreviata (Peck) U. Braun & S. Takamatsu |
| Family | Erysiphaceae |
| Determination | Microsphaera alni (de Candolle) G. Winter |
| Determined by | Greene, Henry Campbell |
| Determination Remarks | [label name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Packet |
| Preparation Method | Dried |
