| Name | Peronospora alsinearum f. cerastii-vulgati P. Karsten |
| Authorship | P. Karsten |
| Rank | Forma |
| NomenclaturalStatus | NomInvalid |
| Placed in | Peronospora alsinearum Caspary |
| Citation | 1866 Fungi Fenniae Exsicc. 6: 582 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Peronospora alsinearum f. cerastii-vulgati P. Karsten |
| Identification made in | [no date] (1) |
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