Synonyms: Calamagrostis arctica; Calamagrostis caespitosa; Calamagrostis cespitosa; Calamagrostis czekanowskiana; Calamagrostis lepageana; Calamagrostis maltei; Calamagrostis purpurascens arctica; Calamagrostis purpurascens maltei; Calamagrostis purpurascens var. arctica; Calamagrostis purpurascens var. macrantha; Calamagrostis purpurascens var. maltei; Calamagrostis purpurascens var. parvigluma; Calamagrostis purpurascens var. pumila; Calamagrostis purpurascens var. purpurascens; Calamagrostis sylvatica var. americana; Calamagrostis sylvatica var. purpurascens (homotypic); Calamagrostis urelytra var. macrantha; Calamagrostis urelytra var. parvigluma; Calamagrostis urelytra var. pumila; Calamagrostis wiluica (homotypic); Calamagrostis yukonensis; Deschampsia congestiformis; Deyeuxia purpurascens var. macrantha; Trisetum bongardii; Trisetum williamsii