| Name | Erysiphe martii f. hyperici-perforati P. Karsten |
| Authorship | P. Karsten |
| Rank | Forma |
| NomenclaturalStatus | NomInvalid |
| Placed in | Erysiphe martii Léveillé |
| Citation | 1865 Fungi Fenniae Exsicc. 3: 280 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Erysiphe martii f. hyperici-perforati P. Karsten |
| Identification made in | [no date] (1) |
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