| Name | Erysiphe martii f. calystegiae Saccardo |
| Authorship | Saccardo |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Erysiphe martii Léveillé |
| Citation | 1874 Mycoth. Veneta Cent. I Ed. I: no. 68 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Erysiphe martii f. calystegiae Saccardo |
| Identification made in | [no date] (1) |
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