| Classification | Lichens: Arthonia | 
| Classification 1 | Lichens: Arthoniales: Arthoniaceae: Allarthonia | 
| Barcode(s) | 00197577 | 
| Collector | H. E. Hasse | 
| Country | United States of America | 
| State | California | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: California: Los Angeles County | 
| Locality | Santa Monica Canon | 
| Date Collected | 1914-07-12 | 
| Habitat | on Junglans californica | 
| Substrate | on bark [corticolous] | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/045c3551-f1dc-498a-859e-0865020c9c53 | 
| Harvard University Herbaria Barcode | 00197577 | 
| Herbarium | FH | 
| Previous ownership | ex Herbarium Hasse | 
| Determination |  Arthonia rhoidis Zahlbruckner | 
| Determined by | K. Knudsen (UCR) | 
| Date Determined | 2009-10-21 | 
| Determination Remarks |  [current name] | 
| Family | Arthoniaceae | 
| Determination | InQuestion Allarthonia sp.  | 
| Determined by | H. E. Hasse | 
| Determination Remarks |  [label name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Packet | 
| Preparation Method | Dried |