| Classification | Lichens: Arthonia |
| Harvard University Herbaria Barcode(s) | 00418770 |
| 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 |
| Locality | Santa Monica Mountains |
| Date Collected | 1902 |
| Habitat | on Malvastrum fasciculatum |
| Substrate | on bark [corticolous] |
| Project | Lichen and Bryophyte TCN |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/f675a831-ccbf-4cc0-aa47-418ef59b0444 |
| Harvard University Herbaria Barcode | 00418770 |
| Herbarium | FH |
| Previous ownership | ex Herbarium H. E. Hasse |
| Determination | Arthonia subdiffusa Willey |
| Determined by | Tucker, Shirley Cotter |
| Date Determined | 2019 |
| Determination Remarks | [filed under] [current name] |
| Determination | Arthonia subdiffusa Willey |
| Determined by | Seavey, Rick |
| Date Determined | 2016-04-02 |
| Annotation Text | sensu Willey Syn Gen. 1890 but not able to locate type material |
| Determination | Arthonia subdiffusa Willey |
| Determination Remarks | [label name] |
| Annotation Text | [note inside packet with information on morphologcal characters, incl. ascus drawings] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Packet |
| Preparation Method | Dried |
