Elymus elymoides subsp. hordeoides

(Suksd.) Barkworth
Endemic
Synonyms: Sitanion hystrix var. hordeoides
Treatment appears in FNA Volume 24. Treatment on page 319.

Culms 10-20 cm, erect. Blades glabrous or puberulent abaxially. Spikes 3-6 cm, exserted or partly included, with 3 spikelets per node. Spikelets in the central position usually with 2 fertile florets, the lateral spikelets usually with rudimentary to awnlike florets. Glume awns 15-50 mm, usually entire; lemma awns of fertile florets 15-30 mm; paleas with or without distinct bristles.

Discussion

Elymus elymoides subsp. hordeoides grows in dry, rocky, often shallow soils, particularly in Artemisia rigida-Poa secunda communities, from eastern Washington and Idaho to northern California and Nevada. It resembles some Elymus-Hordeum hybrids.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

glabrous +  and puberulent +
membranous +  and scarious +
white-villous +, hirsute +, puberulent +  and scabrous +
with hairs +  and scabrous +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
acute +  and truncate +
Mary E. Barkworth +, Julian J.N. Campbell +  and Bjorn Salomon +
(Suksd.) Barkworth +
1 (?) +  and 3 (?) +
purplish;reddish +
flexuous +  and curved +
1.5 cm15 mm <br />0.015 m <br /> (12 cm120 mm <br />0.12 m <br />) +
basal +  and apical +
from the sinus +  and terminal +
undifferentiated +
not geniculate +
1.5 cm15 mm <br />0.015 m <br /> (12.5 cm125 mm <br />0.125 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
indurate +
not evident +
puberulent +  and glabrous +
cross +, linear +  and narrowly lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
spikelike +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
hairy +  and glabrous +
not branching +
puberulent +
geniculate +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
not woody +
Wash. +, D.C. +, Ill. +, Ky. +, Wyo. +, N.Mex. +, Tex. +, Idaho +, Oreg. +, Alta. +, B.C. +, Sask. +, Nev. +, Colo. +, Kans. +, N.Dak. +, Nebr. +, Okla. +, S.Dak. +, Calif. +, Ariz. +, Mont. +, Utah +  and Mo. +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
rudimentary +
(0)1-7-veined +
shorter than to longer than the adjacent florets +
subtending +
keeled +, oblanceolate +  and obovate +
subequal +
2 cm20 mm <br />0.02 m <br /> (13.5 cm135 mm <br />0.135 m <br />) +
uncinate +
solid +  and hollow +
1.5 cm15 mm <br />0.015 m <br /> (?) +
3mm +  and 10mm +
puberulent +  and glabrous +
0.2 cm2 mm <br />0.002 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
ciliate +  and scabrous +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
distributed +
appressed-pubescent +, scabrous +  and glabrous +
linear-lanceolate +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
stiffly membranous +  and coriaceous +
erose +  and entire +
lacerate +  and entire +
1 cm10 mm <br />0.01 m <br /> (?) +
membranous +
inconspicuous +
lanceolate +
fleshy +  and membranous +
pubescent +  and glabrous +
1 +, 4 +  and 6 +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
slightly longer +
subequal +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
dry +  and fleshy +
spikelike +
white-villous +, puberulent +, scabrous +  and glabrous +
3 cm30 mm <br />0.03 m <br /> (?) +  and 20 cm200 mm <br />0.2 m <br /> (?) +
included +  and exserted +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
subsessile +  and sessile +
bisexual +  and sterile +
terete +  and compressed +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
not papillate +
Sitanion hystrix var. hordeoides +
Elymus elymoides subsp. hordeoides +
Elymus elymoides +
subspecies +
membranous +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
inconspicuous +
unequal +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
plant +  and cespitose +
aquatic +  and terrestrial +