| Name | Polypodium cryptum Underwood & Maxon |
| Authorship | Underwood & Maxon |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Polypodium Linnaeus |
| Citation | 1902 Bull. Torrey Bot. Club 29: 579 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Polypodium cryptum Underwood & Maxon |
| Identification made in | [no date] (1) |
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