| Classification | Fungi: Basidiomycota: Pucciniomycetes: Pucciniales: Melampsoraceae: Cronartium | 
| Harvard University Herbaria Barcode(s) | 00806860 | 
| Collector | G. G. Hedgcock | 
| Country | United States of America | 
| State | District of Columbia | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: District of Columbia: Washington | 
| Locality | Pathological Greenhouse 5 | 
| Date Collected | 1921-06-04 | 
| Habitat | potted trees | 
| Substrate | leaves | 
| Host | Quercus gambelii | 
| Frequency | sparse | 
| Project | Microfungi TCN | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/e29de073-670e-496b-8e2c-51446ae10162 | 
| Harvard University Herbaria Barcode | 00806860 | 
| Herbarium | FH | 
| Previous ownership | ex Herbarium J. H. Faull 9797; F.P. 38026 | 
| Family | Melampsoraceae | 
| Determination | Cronartium quercuum (Berkeley) Miyabe ex Shirai | 
| Determined by | Hedgcock, George Grant | 
| Determination Remarks | [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Packet | 
| Preparation Method | Dried |