Agropyron boreale var. hyperarcticum (Polunin) S.L. Welsh
Agropyron boreale var. hyperarcticum (Polunin) S.L. Welsh is a synonym sensu TROPICOS of:
Elymus alaskanus subsp. hyperarcticus (Polunin) Á. Löve & D. Löve, an accepted subspecies name sensu FNA Ed. Comm., 2007.