| Classification | Fungi: Ascomycota: Erysiphales: Erysiphaceae: Microsphaera |
| Harvard University Herbaria Barcode(s) | 00965537 |
| Type Status | Holotype |
| Collector | T. A. Bonser |
| Country | United States of America |
| State | Washington |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Washington |
| Locality | Deer Lake |
| Date Collected | 1906-08-15 |
| Host | Ceanothus velutinus |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/05705015-1ba5-4548-ad85-4bee36d17032 |
| Harvard University Herbaria Barcode | 00965537 |
| Herbarium | FH |
| Family | Erysiphaceae |
| Type Status | Holotype |
| Holotype of | Microsphaera sydowiana U. Braun |
| Verified by | Braun, Uwe |
| Date Determined | 1982-04-02 |
| Determination Remarks | [filed under] [current name] |
| Annotation Text | Herb. Univ. Halensis |
| Taxon Reference | (for Microsphaera sydowiana U. Braun) Mycotaxon 1982. 15:139. |
| Family | Erysiphaceae |
| Determination | Microsphaera alni (de Candolle) G. Winter |
| Determined by | [W. G. Farlow] |
| Annotation Text | see Lalmon letter of 11 March 1908. not divaricata but intermediate between M. alni and var. vaccinii |
| Family | Erysiphaceae |
| Determination | Microsphaera alni var. divaricata (Wallroth) M. E. Jones |
| Determination Remarks | [label name] |
| Preparation Type | Packet |
| Preparation Method | Dried |
