Elymus elymoides subsp. californicus

(J.G. Sm.) Barkworth
Common names: California squirreltail
Endemic
Synonyms: Sitanion hystrix var. californicum Sitanion californicum
Treatment appears in FNA Volume 24. Treatment on page 319.

Culms 8-40 cm, erect or decumbent. Blades usually glabrous abaxially, sometimes puberulent. Spikes 3-10 cm, often partly included, usually with 2 spikelets per node. Spikelets with (1) 2-3 fertile florets, lowest 1-2 florets sterile and glumelike. Glume awns 15-40 (70) mm, entire; lemma awns 25-70 mm, usually exceeding those of the glumes; paleas often with the veins extended as 1-2 mm bristles.

Discussion

Elymus elymoides subsp. californicus grows in mid-montane to arctic-alpine habitats in western North America, at elevations of 1500-4200 m. Plants transitional to subsp. elymoides occur where the two are sympatric.

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 +
(J.G. Sm.) 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 +
California squirreltail +
not branching +
decumbent +  and erect +
puberulent +
geniculate +
8 cm80 mm <br />0.08 m <br /> (40 cm400 mm <br />0.4 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 +
2 +  and 3 +
sterile +  and fertile +
laterally compressed +  and terete +
(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 +
2.5 cm25 mm <br />0.025 m <br /> (7 cm70 mm <br />0.07 m <br />) +
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 +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 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 /> (?) +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 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. californicum +  and Sitanion californicum +
Elymus elymoides subsp. californicus +
Elymus elymoides +
subspecies +
membranous +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
inconspicuous +
extended +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
plant +  and cespitose +
aquatic +  and terrestrial +