| Classification | Fungi: Basidiomycota: Pucciniomycetes: Pucciniales: Melampsoraceae: Cronartium | 
| Harvard University Herbaria Barcode(s) | 00806869 | 
| 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 4 | 
| Date Collected | 1915-06-09 | 
| Habitat | potted trees | 
| Substrate | leaves | 
| Host | Quercus robur | 
| Frequency | medium to abundant | 
| Project | Microfungi TCN | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/5292e50c-ce21-4d7f-8061-9a6f72a53dd9 | 
| Harvard University Herbaria Barcode | 00806869 | 
| Herbarium | FH | 
| Previous ownership | ex Herbarium J. H. Faull 9824, F.P. 17813 | 
| 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 |