| Name | Rhizocarpon cookeanum H. Magnusson |
| Authorship | H. Magnusson |
| Rank | Species |
| Placed in | Rhizocarpon Ramond ex de Candolle |
| GUID | urn:lsid:indexfungorum.org:names:369993 |
| Citation | 1856 Opera Bot. 87 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Rhizocarpon cookeanum H. Magnusson |
| Identification made in | [no date] (1) |