⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Roegneria japonensis in version 1.1 of The Plant List.
This name is a synonym of Elymus ciliaris .
The record derives from Tropicos which reports it as a synonym (record 25526115
) with original publication details: Claves Gen. Sp. Gram. Prim. Sinic. 186 186 1957.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:419505-1
.