| Name | Rhizocarpon sp. |
| Authorship | |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Rhizocarpon Ramond ex de Candolle |
| Holdings | 52 Specimens held in the Harvard University Herbaria identified as Rhizocarpon sp. |
| Identification made in | [no date] (51), 1955 (1) |