| Classification | Fungi: Ascomycota: Erysiphales: Erysiphaceae: Erysiphe | 
| Classification 1 | Fungi: Ascomycota: Erysiphales: Erysiphaceae | 
| Harvard University Herbaria Barcode(s) | 01085236 | 
| Collector | J. K. Mitchell | 
| Collector number | JM0180 | 
| Country | United States of America | 
| State | Massachusetts | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Middlesex County: Cambridge | 
| Locality | Harvard University Campus, west side of Grays Hall | 
| Georeference | 42° 22' 25.4" N, 71° 07' 05.0" W | 
| Date Collected | 2024-06-27 | 
| Elevation | 7 m | 
| Habitat | Southern of two trees planted in a thin strip between the building and the path | 
| Container | Fungi of Harvard University | 
| Substrate | Growing on leaves ... | 
| Host | a buckeye tree (Aesculus sp.); Aesculus pavia [J.K. Mitchell 25.viii.2025] | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/ef7800d3-0786-460e-9f9c-21ba6945ce74 | 
| Harvard University Herbaria Barcode | 01085236 | 
| Herbarium | FH | 
| Family | Erysiphaceae | 
| Determination | Erysiphe flexuosa (Peck) U. Braun & S. Takamatsu | 
| Determined by | Mitchell, James Kameron | 
| Date Determined | 2024-09-12 | 
| Determination Remarks | [filed under] [current name] | 
| Family | Erysiphaceae | 
| Determination | Erysiphaceae | 
| Determined by | Mitchell, James Kameron | 
| Date Determined | 2024-06-27 | 
| Determination Remarks | [label name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Packet | 
| Preparation Method | Dried |