| Name | Polypodium ×incognitum Cusik |
| Authorship | Cusik |
| Rank | Species |
| Placed in | Polypodium Linnaeus |
| Holdings | 35 Specimens held in the Harvard University Herbaria identified as Polypodium ×incognitum Cusik |
| Identification made in | [no date] (34), 2011 (1) |
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