⚠ Version 1 of The Plant List has been superseded.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 Sanguisorba riishirensis in version 1.1 of The Plant List.
This name is a synonym of Sanguisorba sitchensis var. riishirensis .
The record derives from Tropicos which reports it as a synonym (record 50245602
) with original publication details: Bot. Mag. (Tokyo) 11: 155 155 1907.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:741413-1
.