⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-402774, with some changes.

Calamagrostis halleriana var. ambigua Hartm. is a synonym of Calamagrostis villosa (Chaix) J.F.Gmel.

This name is a synonym of Calamagrostis villosa (Chaix) J.F.Gmel..

The record derives from WCSP which reports it as a synonym (record 402774) with original publication details: Handb. Skand. Fl. ed. 4: 26 1843.