⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-403321, and has not been changed.

Calamagrostis sachalinensis var. hakonensis (Franch. & Sav.) Honda is a synonym of Calamagrostis hakonensis Franch. & Sav.

This name is a synonym of Calamagrostis hakonensis Franch. & Sav..

The record derives from WCSP which reports it as a synonym (record 403321) with original publication details: J. Fac. Sci. Univ. Tokyo, Sect. 3, Bot. 3: 167 1930.