Calamagrostis purpurascens subsp. maltei (Polunin) A.E. Porsild

Calamagrostis purpurascens subsp. maltei (Polunin) A.E. Porsild is a synonym sensu Soreng et al., 2000+ of:

Calamagrostis purpurascens R. Brown, an accepted species name sensu FNA Ed. Comm., 2007.