| Classification | Fungi: Ascomycota: Ascomycetes: Opegraphales: Opegraphaceae: Opegrapha |
| Harvard University Herbaria Barcode(s) | 00455944 |
| Collector | W. W. Calkins |
| Country | United States of America |
| State | Illinois |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Illinois: Cook County |
| Locality | [no additional data] |
| Project | Lichen and Bryophyte TCN |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/06c78ceb-bace-4157-9d97-e8b6f733f131 |
| Harvard University Herbaria Barcode | 00455944 |
| Herbarium | FH |
| Family | Opegraphaceae |
| Determination | Opegrapha atra Persoon |
| Determination Remarks | [is filed under name] [is Current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Packet |
| Preparation Method | Dried |
