| Name | Xanthoria fallax (Hepp ex Arnold) Arnold |
| Authorship | (Hepp ex Arnold) Arnold |
| Rank | Species |
| Placed in | Xanthoria (Fries) Th. Fries |
| Citation | 1880 Verh. K.K. Zool.-Bot. Ges. Wien 30: 121 |
| Holdings | 47 Specimens held in the Harvard University Herbaria identified as Xanthoria fallax (Hepp ex Arnold) Arnold |
| Identification made in | [no date] (44), 1960 (2), 2010 (1) |