⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-50071124, with some changes.

Pentarhizidium japonicum Hayata is a synonym of Onoclea orientalis (Hook.) Hook.

This name is a synonym of Onoclea orientalis (Hook.) Hook..

The record derives from Tropicos which reports it as a synonym (record 50071124) with original publication details: Bot. Mag. (Tokyo) 42(499): 345 345 1928.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:17344440-1.