Elymus alaskanus subsp. hyperarcticus

(Polunin) Á. Löve & D. Löve
Common names: High-arctic wheatgrass
Synonyms: Roegneria hyperarctica Roegneria borealis var. hyperarctica Elymus sajanensis subsp. hyperarcticum Elymus hyperarcticus Agropyron violaceum var. hyperarcticum
Treatment appears in FNA Volume 24. Treatment on page 326.

Plants cespitose, not rhizomatous. Culms 20-35(50) cm, ascending to erect; nodes concealed. Ligules 0.5-1 mm, erose to ciliate; blades 2.5-5 mm wide. Spikes 4.5-7 cm; internodes 4-6 mm, ciliate, distal cilia longest. Glumes densely hairy, hairs 0.2-0.5 mm, apices mucronate or awned, awns to 1 mm; lemmas densely hairy, hairs 0.2-0.5 mm, apices awned, awns 1-5 mm, straight. 2n = 28.

Discussion

Elymus alaskanus subsp. hyperarcticus grows on river banks and hillsides. It extends from the Lake Taymyr basin in arctic Russia across northern North America to Greenland.

Selected References

None.

Lower Taxa

None.
Mary E. Barkworth +, Julian J.N. Campbell +  and Bjorn Salomon +
(Polunin) Á. Löve & D. Löve +
High-arctic wheatgrass +
Alta. +, B.C. +, Greenland +, Nfld. and Labr. (Nfld.) +, Man. +, N.S. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Yukon +, Mont. +, Wyo. +, Colo. +, N.Mex. +, Wash. +, Idaho +, Mich. +, Alaska +, Oreg. +  and Nev. +
Roegneria hyperarctica +, Roegneria borealis var. hyperarctica +, Elymus sajanensis subsp. hyperarcticum +, Elymus hyperarcticus +  and Agropyron violaceum var. hyperarcticum +
Elymus alaskanus subsp. hyperarcticus +
Elymus alaskanus +
subspecies +