⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-402770, and has not been changed.

Calamagrostis hakonensis var. koidzumiana (Ohwi) 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 402770) with original publication details: Bot. Mag. (Tokyo) 49: 699 1935.