| Classification | Lichens: Rhizocarpon | 
| Harvard University Herbaria Barcode(s) | 00477858 | 
| Collector | J. Macoun | 
| Country | Canada | 
| State | Ontario | 
| Geography | North America: North America (CA, US, MX) (Region): Canada: Ontario: Ottawa | 
| Locality | [no additional data] | 
| Date Collected | 1904-06-06 | 
| Project | Lichen and Bryophyte TCN | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/e5ba25d9-3cba-4ad6-a74c-a7d57f6afbe1 | 
| Harvard University Herbaria Barcode | 00477858 | 
| Herbarium | FH | 
| Determination | Rhizocarpon petraeum (Wulfen) A. Massalongo | 
| Determination Remarks | [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Packet | 
| Preparation Method | Dried |