Leymus mollis subsp. mollis

Treatment appears in FNA Volume 24. Treatment on page 358.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Rhizomes 4-6 mm thick. Culms (50) 70-170 cm. Basal blades 22-94 cm long, 5-15 mm wide. Spikes 12-34 cm, with 12-33 nodes. Glumes 13-34 mm long, 3-4 mm wide, often longer than the lemmas, usually pilose, sometimes almost glabrous. 2n = 28.

Discussion

In the Flora region, Leymus mollis subsp. mollis grows primarily on the west coast; on the east coast, it grows in New Brunswick and Nova Scotia, particularly along the St. Lawrence River, and on the coast of Greenland. It does not grow along the arctic coast. Outside the Flora region, it is native in the coastal region of eastern Asia, growing primarily along the coast and in the mouths of larger rivers, and on the shores of large lakes near the coast from the Korean Peninsula to the Kamchatka Peninsula. It was introduced to Iceland, but is now rare there.

Leymus xvancouverensis is thought to be a hybrid between L. mollis subsp. mollis and L. triticoides, although its range extends beyond the current range of L. triticoides.

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 +
scabridulous +  and scabrous +
0.4 cm4 mm <br />0.004 m <br /> - 0.9 cm9 mm <br />0.009 m <br /> +
0-3 - 7-veined +
straight +
midlength +
hairy +, glabrous +  and pilose +
0 cm0 mm <br />0 m <br /> - 0.4 cm4 mm <br />0.004 m <br /> +
0 cm0 mm <br />0 m <br /> - 0.07 cm0.7 mm <br />7.0e-4 m <br /> +
Mary E. Barkworth +
- Trin. Pilg. +
0-3 - 7-veined +
1 - ? +  and 3 - ? +
straight +
midlength +
glabrous +  and pilose +
tapering +, acuminate +, acute +  and keeled +
1.6 cm16 mm <br />0.016 m <br /> - 3.3 cm33 mm <br />0.033 m <br /> +
rounded +  and flat +
22 cm220 mm <br />0.22 m <br /> - 94 cm940 mm <br />0.94 m <br /> +
0.5 cm5 mm <br />0.005 m <br /> - 1.5 cm15 mm <br />0.015 m <br /> +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
10 cm100 mm <br />0.1 m <br /> - 94 cm940 mm <br />0.94 m <br /> +
not evident +
cross +, linear +  and narrowly lanceolate +
0.3 cm3 mm <br />0.003 m <br /> - 1.5 cm15 mm <br />0.015 m <br /> +
spikelike +
hairy +  and glabrous +
not branching +
12 cm120 mm <br />0.12 m <br /> - 170 cm1,700 mm <br />1.7 m <br /> +
70 cm700 mm <br />0.7 m <br /> - 170 cm1,700 mm <br />1.7 m <br /> +
not woody +
0.3 cm3 mm <br />0.003 m <br /> - 0.6 cm6 mm <br />0.006 m <br /> +
Alta. +, B.C. +, Greenland +, Man. +, N.B. +, Nfld. and Labr. +, N.S. +, N.W.T. +, Nunavut +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Maine +, Mass. +, Wash. +, Alaska +, Mich. +, Wis. +, Oreg. +, N.H. +, Pa. +, Ill. +  and Calif. +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
3 +  and 6 +
laterally compressed +  and terete +
shorter than to longer than the adjacent florets +
13mm +  and 34mm +
subtending +
glabrous +  and pilose +
tapering +  and lanceolate +
reduced +  and subequal +
3mm +  and 4mm +
uncinate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> - 0.1 cm1 mm <br />0.001 m <br /> +
solid +  and hollow +
15 cm150 mm <br />0.15 m <br /> - ? +
0.45 cm4.5 mm <br />0.0045 m <br /> - 0.95 cm9.5 mm <br />0.0095 m <br /> +
0-3 - 7-veined +
glabrous +  and pilose +
tapering +, acuminate +, acute +  and keeled +
distributed +
keeled +  and rounded +
1.1 cm11 mm <br />0.011 m <br /> - 2 cm20 mm <br />0.02 m <br /> +
stiffly membranous +  and coriaceous +
truncate +  and rounded +
0.02 cm0.2 mm <br />2.0e-4 m <br /> - 0.25 cm2.5 mm <br />0.0025 m <br /> +
membranous +
inconspicuous +
fleshy +  and membranous +
concealed +  and prominent +
12 +  and 33 +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
slightly shorter than to slightly longer than the lemmas +
slightly longer +
subequal +
appressed +  and ascending +
0 cm0 mm <br />0 m <br /> - 0.5 cm5 mm <br />0.005 m <br /> +
dry +  and fleshy +
spikelike +
5 cm50 mm <br />0.05 m <br /> - ? +  and 34 cm340 mm <br />0.34 m <br /> - ? +
12 cm120 mm <br />0.12 m <br /> - 34 cm340 mm <br />0.34 m <br /> +
pedicellate +  and sessile +
bisexual +  and sterile +
terete +  and compressed +
1.5 cm15 mm <br />0.015 m <br /> - 3.4 cm34 mm <br />0.034 m <br /> +
1 +  and 3 +
simple +  and compound +
2 - ? +  and 3 - ? +
not papillate +
Elymus mollis +, Elymus arenarius var. villosus +, Elymus arenarius var. mollis +  and Elymus arenarius subsp. mollis +
Leymus mollis subsp. mollis +
Leymus mollis +
subspecies +
awnlike +
membranous +
0-3 - 7-veined +
midlength +
glabrous +  and pilose +
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 +