⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-403320, and has not been changed.

Calamagrostis sachalinensis var. argyrea (Franch. & Sav.) Matsum. 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 403320) with original publication details: Index Pl. Jap. 2(1): 47 1905.