| Name | Fenestella princeps f. alni Saccardo |
| Authorship | Saccardo |
| Rank | Forma |
| Placed in | Fenestella princeps Tulasne & C. Tulasne |
| Citation | 1883 Syll. Fung. 2: 326 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Fenestella princeps f. alni Saccardo |
| Identification made in | [no date] (1) |
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