| Classification | Peronosporaceae |
| Classification 1 | Peronosporaceae: Plasmopara |
| Classification 2 | Peronosporaceae: Peronospora |
| Harvard University Herbaria Barcode(s) | 00079667 |
| Type Status | Syntype |
| Collector | C. E. Bessey |
| Country | United States of America |
| State | Iowa |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Iowa |
| Date Collected | 1878-07-23 |
| Habitat | Host: Eupatorium purpureum |
| Host | Eupatorium purpureum |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/83bc8336-894e-447b-be8a-1b7eb1d4e25d |
| Harvard University Herbaria Barcode | 00079667 |
| Herbarium | FH |
| Family | Peronosporaceae |
| Determination | Peronospora |
| Determination Remarks | [is label name] |
| Family | Peronosporaceae |
| Determination | Plasmopara halstedii (Farlow) Berl. & De Toni |
| Determined by | O. Constantinescu |
| Date Determined | 1983-11-** |
| Determination Remarks | [is Current name] |
| Family | Peronosporaceae |
| Type Status | Syntype |
| Syntype of | Peronospora halstedii Farlow |
| Verified by | O. Constantinescu |
| Date Determined | 1983-11-** |
| Taxon Reference | (for Peronospora halstedii Farlow) Proc. Amer. Acad. Arts 1883. 18: 72. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Packet |
| Preparation Method | Dried |
