World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew

Elymus alaskanus subsp. hyperarcticus (Polunin) �.L�ve & D.L�ve, Bot. Not. 128: 502 (1975 publ. 1976).

This name is a synonym.

Homotypic Names:
Accepted Name:	Elymus sajanensis (Nevski) Tzvelev, Novosti Sist. Vyssh. Rast. 9: 61 (1972).
Family:	Poaceae
* Agropyron violaceum var. hyperarcticum Polunin, Bull. Natl. Mus. Canada 92: 95 (1940). Roegneria borealis var. hyperarctica (Polunin) Melderis, Svensk Bot. Tidskr. 44: 161 (1950). Roegneria borealis subsp. hyperarctica (Polunin) �.L�ve & D.L�ve, Acta Horti Gothob. 20: 188 (1956). Roegneria hyperarctica (Polunin) Tzvelev, Fl. Arct. URSS 2: 244 (1964). Agropyron boreale subsp. hyperarcticum (Polunin) Melderis, Ark. Bot., a.s., 7(1): 19 (1967 publ. 1968). Elymus hyperarcticus (Polunin) Tzvelev, Novosti Sist. Vyssh. Rast. 9: 61 (1972). Elymus sajanensis subsp. hyperarcticus (Polunin) Tzvelev, Novosti Sist. Vyssh. Rast. 10: 24 (1973). Agropyron boreale var. hyperarcticum (Polunin) S.L.Welsh in J.P.Anderson, Fl. Alaska: 546 (1974). * Basionym/Replaced Synonym
Original Compiler:	W.D.Clayton, R.Govaerts, K.T.Harman, H.Williamson & M.Vorontsova