⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-26621630, with some changes.

Polypodium americanum Hook. is a synonym of Niphidium americanum (Hook.) J. Sm.

This name is a synonym of Niphidium americanum (Hook.) J. Sm..

The record derives from Tropicos which reports it as a synonym (record 26621630) with original publication details: Sp. Fil. 5: 54 54 1864.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:17182430-1.