| Name | Polyporus holotephrus Berkeley & M. A. Curtis |
| Authorship | Berkeley & M. A. Curtis |
| Rank | Species |
| Placed in | Polyporus |
| Citation | 1868 ["1869"] J. Linn. Soc., Bot. 10(no. 45): 315 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Polyporus holotephrus Berkeley & M. A. Curtis |
| Identification made in | [no date] (5) |
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