| Name | Phragmidium rosae-californicae Dietel |
| Authorship | Dietel |
| Rank | Species |
| Placed in | Phragmidium |
| Citation | 1905 Hedwigia 44: 125 |
| Holdings | 44 Specimens held in the Harvard University Herbaria identified as Phragmidium rosae-californicae Dietel |
| Identification made in | [no date] (44) |