Elymus trachycaulus subsp. subsecundus

(Link) Á. Löve & D. Love
Common names: One-sided wheatgrass
Synonyms: Elymus trachycaulus var. unilaterale Elymus trachycaulus subsp. glaucus Elymus subsecundus Agropyron trachycaulum var. unilateral Agropyron trachycaulum var. glaucum Agropyron subsecundum Agropyron parishii var. laeve Agropyron caninum var. unilaterale
Treatment appears in FNA Volume 24. Treatment on page 322.

Culms 40-110 cm. Spikes 7-25 cm, somewhat 1-sided. Spikelets with 3-7 florets, the bases usually visible. Glumes 11-17 mm, long-acuminate or awned, awns to 11 mm; lemmas awned, awns 17-40 mm, longer than the lemma body, straight.

Discussion

Elymus trachycaulus subsp. subsecundus grows primarily in the Great Plains. It differs from plants of E. glaucus (p. 306) with solitary spikelets, in its 1-sided spike and stiffer, more basally concentrated leaves. It may comprise derivatives of E. trachycaulus subsp. trachycaulus x Hordeum jubatum (p. 245) hybrids that are adapted to moist prairies. The unilateral spike is particularly characteristic of artificial hybrids between the two species, and is uncommon in other hybrids (Jozwik 1966).

Selected References

None.

Lower Taxa

None.

Mary E. Barkworth +, Julian J.N. Campbell +  and Bjorn Salomon +
(Link) Á. Löve & D. Love +
One-sided wheatgrass +
Conn. +, N.J. +, N.Y. +, Wash. +, Wis. +, Alta. +, B.C. +, Greenland +, Man. +, N.B. +, Nfld. and Labr. +, N.S. +, N.W.T. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, W.Va. +, Wyo. +, N.H. +, N.Mex. +, Tex. +, N.C. +, N.Dak. +, Pa. +, Calif. +, Nev. +, Va. +, Colo. +, Alaska +, Nebr. +, S.Dak. +, Vt. +, Ill. +, Ind. +, Iowa +, Ariz. +, Idaho +, Maine +, Md. +, Mass. +, Ohio +, Utah +, Mo. +, Minn. +, Mich. +, R.I. +, Kans. +, Mont. +, Ky. +  and Oreg. +
Elymus trachycaulus var. unilaterale +, Elymus trachycaulus subsp. glaucus +, Elymus subsecundus +, Agropyron trachycaulum var. unilateral +, Agropyron trachycaulum var. glaucum +, Agropyron subsecundum +, Agropyron parishii var. laeve +  and Agropyron caninum var. unilaterale +
Elymus trachycaulus subsp. subsecundus +
Elymus trachycaulus +
subspecies +