| Classification | Fungi: Ascomycota: Erysiphales: Erysiphaceae: Erysiphe |
| Harvard University Herbaria Barcode(s) | 01131038 |
| Type Status | Holotype |
| Collector | M. J. Bradshaw |
| Collector number | MJB UW279 |
| Country | United States of America |
| State | Washington |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Washington: King County: Seattle |
| Locality | Washington State Arboretum |
| Georeference | 47 38 22.85 N, 122 17 39.63 W |
| Date Collected | 2018-10-12 |
| Host | On Quercus garryana |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/8c086406-80c6-445d-9ceb-d78b65892dba |
| Harvard University Herbaria Barcode | 01131038 |
| Herbarium | FH |
| Family | Erysiphaceae |
| Type Status | Holotype |
| Holotype of | Erysiphe occidentalis M. Bradshaw, U. Braun & Quijada |
| Determination Remarks | [filed under] [current name] |
| Taxon Reference | (for Erysiphe occidentalis M. Bradshaw, U. Braun & Quijada) Forest Pathol. 2025. 55: e70005, 16. |
| Family | Erysiphaceae |
| Determination | Erysiphe sp. |
| Determined by | Bradshaw, Michael James |
| Determination Remarks | [label name] |
| Determination | |
| Determined by | Liu, Miao |
| Date Determined | 2024-06-** |
| Annotation Text | Amphigenous, but more obvious on adaxial surface as thick effusive mycelium mat; less visible on abaxial, also due to the lighter leaf color; conidia mostly oblong, or obovoid 28-34 x 13-18 um, 'special hyphae' or young conidiophores zigzag at base... [see annotation slip for additional data] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Packet |
| Preparation Method | Dried |
