| Name | Corticium polygonium f. carpini-betuli Saccardo |
| Authorship | Saccardo |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Corticium polygonium Persoon: Fries |
| Citation | 1878 Mycoth. Veneta Cent. 12: no. 1111 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Corticium polygonium f. carpini-betuli Saccardo |
| Identification made in | [no date] (1) |