| Name | Peronospora alsinearum f. cerastii-trivialis Thümen |
| Authorship | Thümen |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Peronospora alsinearum Caspary |
| Citation | 1875 Mycoth. Univ. Cent. 3: no. 249 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Peronospora alsinearum f. cerastii-trivialis Thümen |
| Identification made in | [no date] (1) |