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.

"decumbent" is not a number.No values specified.

hairy +  and glabrous +
membranous +  and scarious +
glabrous +  and hairy +
with hairs +  and scabrous +
0.8 cm8 mm <br />0.008 m <br /> (?) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
truncate +  and awned +
acute +  and awned +
0.15mm;0.3mm +
Mary E. Barkworth +, Julian J.N. Campbell +  and Bjorn Salomon +
(Link) Á. Löve & D. Love +
1 (?) +  and 3 (?) +
straight +
basal +  and apical +
from the sinus +  and terminal +
not geniculate +
1.7 cm17 mm <br />0.017 m <br /> (4 cm40 mm <br />0.04 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
straight +
not evident +
flat +  and involute +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
spikelike +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
hairy +  and glabrous +
One-sided wheatgrass +
not branching +
sometimes strongly decumbent +  and prostrate +
ascending +  and erect +
40 cm400 mm <br />0.4 m <br /> (110 cm1,100 mm <br />1.1 m <br />) +
not woody +
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. +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
3 +  and 7 +
laterally compressed +  and terete +
shorter than to longer than the adjacent florets +
keeled +, flat +, 5mm +  and 17mm +
midlength +
awned +  and long-acuminate +
subequal +
1.1 cm11 mm <br />0.011 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
uncinate +
0 cm0 mm <br />0 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
solid +  and hollow +
4 cm40 mm <br />0.04 m <br /> (?) +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
ciliate +  and scabrous +
tapering +
distributed +
scabridulous +
linear-lanceolate +
0.6 cm6 mm <br />0.006 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
stiffly membranous +  and coriaceous +
1.8mm +  and 2.3mm +
erose +  and entire +
acute +, rounded +  and truncate +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
membranous +
inconspicuous +
lanceolate +
fleshy +  and membranous +
widest;0.2mm;0.5mm +
concealed +  and prominent +
hairy +  and glabrous +
well-developed +
slightly longer +
subequal +
dry +  and fleshy +
spikelike +
hairy +  and glabrous +
villous +, hirsute +  and glabrous +
4 cm40 mm <br />0.04 m <br /> (?) +  and 25 cm250 mm <br />0.25 m <br /> (?) +
7 cm70 mm <br />0.07 m <br /> (25 cm250 mm <br />0.25 m <br />) +
subsessile +  and sessile +
bisexual +  and sterile +
terete +  and compressed +
3mm +  and 6mm +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
not papillate +
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 +
membranous +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
inconspicuous +
unequal +
plant +  and cespitose +
aquatic +  and terrestrial +