Leymus simplex var. simplex

Treatment appears in FNA Volume 24. Treatment on page 359.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Culms 35-55 cm tall, 1-2 mm thick. Spikes 1.5-13 cm long; internodes 7-9 mm. Spikelets 16-22 mm, with 3-6 florets.

Discussion

Leymus simplex var. simplex is found throughout the range of the species, sometimes in close proximity to var. luxurians. The two may be environmentally induced variants, but the lack of intermediates suggests a genetic distinction.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number."/2-33/4timesthelengthof" is not declared as a valid unit of measurement for this property.

membranous +  and scarious +
0.37 cm3.7 mm <br />0.0037 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0-3(7)-veined +
straight +
midlength +
hairy +, glabrous +  and pilose +
acute +, tapering +, acuminate +  and keeled +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0 cm0 mm <br />0 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Mary E. Barkworth +
(Scribn. & T.A. Williams) D.R. Dewey +
0-3(7)-veined +
1 (?) +  and 3 (?) +
12 cm120 mm <br />0.12 m <br /> (?) +
straight +
midlength +
glabrous +  and pilose +
tapering +, acuminate +, acute +  and keeled +
0.23 cm2.3 mm <br />0.0023 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
4 cm40 mm <br />0.04 m <br /> (29 cm290 mm <br />0.29 m <br />) +
not evident +
cross +, linear +  and narrowly lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
spikelike +
hairy +  and glabrous +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
not branching +
35 cm350 mm <br />0.35 m <br /> (55 cm550 mm <br />0.55 m <br />) +
pubescent +  and glabrous +
10 cm100 mm <br />0.1 m <br /> (350 cm3,500 mm <br />3.5 m <br />) +
not woody +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Colo. +, Utah +, Wyo. +, Calif. +, Nev. +, Ariz. +  and Oreg. +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
3 +  and 6 +
laterally compressed +  and terete +
shorter than to longer than the adjacent florets +
1/4 +, 8mm +  and 12mm +
subtending +
tapering +  and subulate +
subequal +
0.5mm +  and 1.5mm +
uncinate +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
solid +  and hollow +
15 cm150 mm <br />0.15 m <br /> (?) +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0-3(7)-veined +
glabrous +  and pilose +
tapering +, acuminate +, acute +  and keeled +
distributed +
keeled +  and rounded +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
stiffly membranous +  and coriaceous +
truncate +  and rounded +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
membranous +
inconspicuous +
fleshy +  and membranous +
concealed +  and prominent +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
slightly shorter than to slightly longer than the lemmas +
slightly longer +
subequal +
5 cm50 mm <br />0.05 m <br /> (?) +
appressed +  and ascending +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
dry +  and fleshy +
spikelike +
1.5 cm15 mm <br />0.015 m <br /> (?) +  and 13 cm130 mm <br />0.13 m <br /> (?) +
bisexual +  and sterile +
terete +  and compressed +
1.6 cm16 mm <br />0.016 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
strigillose +  and glabrous +
not papillate +
Elymus simplex var. luxurians +  and Elymus simplex +
Leymus simplex var. simplex +
Leymus simplex +
variety +
awnlike +
membranous +
0-3(7)-veined +
midlength +
inconspicuous +
glabrous +  and pilose +
7 (?) +  and 11 (?) +
tapering +, acuminate +, acute +  and keeled +
subequal +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
plant +  and not cespitose +
aquatic +  and terrestrial +