| Name | Polyporus resinosus var. incurvus Peck |
| Authorship | Peck |
| Rank | Variety |
| Placed in | Polyporus resinosus (Schrader) Fries: Fries |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Polyporus resinosus var. incurvus Peck |
| Identification made in | [no date] (1) |