| Name | Erysiphe martii f. trifolii (Fuckel) Saccardo |
| Authorship | (Fuckel) Saccardo |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Erysiphe martii Léveillé |
| Citation | 1875 Mycoth. Veneta Cent. II: no. 150 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Erysiphe martii f. trifolii (Fuckel) Saccardo |
| Identification made in | [no date] (1) |