Elymus lanceolatus subsp. riparius

(Scribn. & J.G. Sm.) Barkworth
Common names: Streambank wheatgrass
Synonyms: Elymus lanceolatus var. riparius
Treatment appears in FNA Volume 24. Treatment on page 329.
Revision as of 02:03, 30 July 2020 by imported>Volume Importer
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Culms usually 22-60 cm. Spikes 6-10 cm; internodes 3.5-10 mm, glabrous, sometimes scabrous. Spikelets 10-17 mm. Lemmas smooth, sometimes scabrous distally, mostly glabrous, margins sometimes hairy proximally.

Discussion

Elymus lanceolatus subsp. riparius grows throughout most of the western part of the range of E. lanceolatus, being more common in mesic habitats and clay soils than the other two subspecies.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

membranous +  and scarious +
with hairs +  and scabrous +
2.5 cm25 mm <br />0.025 m <br /> (?) +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
bidentate +  and acute +
0.2mm;0.3mm +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Mary E. Barkworth +, Julian J.N. Campbell +  and Bjorn Salomon +
(Scribn. & J.G. Sm.) Barkworth +
1 (?) +  and 3 (?) +
straight +
basal +  and apical +
from the sinus +  and terminal +
not geniculate +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not evident +
cross +, linear +  and narrowly lanceolate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
spikelike +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
hairy +  and glabrous +
Streambank wheatgrass +
not branching +
sometimes strongly decumbent +  and prostrate +
22 cm220 mm <br />0.22 m <br /> (60 cm600 mm <br />0.6 m <br />) +
not woody +
Oreg. +, Nev. +, Colo. +, N.Mex. +, Alaska +, Ill. +, Mont. +, Wyo. +, Mich. +, Wis. +, Idaho +, Alta. +, B.C. +, Man. +, Ont. +, Sask. +, Yukon +, Wash. +, Ariz. +, Calif. +, N.Dak. +, Nebr. +  and S.Dak. +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
3 +  and 11 +
laterally compressed +  and terete +
shorter than to longer than the adjacent florets +
5mm +  and 14mm +
subtending +
hairy +  and glabrous +
1/2 +  and 3/4 +
keeled +  and lanceolate +
subequal +
0.7mm +  and 1.3mm +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
with hairs +  and glabrous +
solid +  and hollow +
1.5 cm15 mm <br />0.015 m <br /> (?) +
3.5mm +  and 15mm +
0.35 cm3.5 mm <br />0.0035 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (?) +  and 0.08 cm0.8 mm <br />8.0e-4 m <br /> (?) +
hairy +, scabrous +  and smooth +
distributed +
linear-lanceolate +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
stiffly membranous +  and coriaceous +
erose +  and entire +
acute +, rounded +  and truncate +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
membranous +
inconspicuous +
lanceolate +
fleshy +  and membranous +
tapering +
concealed +  and prominent +
few +  and 2 +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
slightly longer +
subequal +
dry +  and fleshy +
spikelike +
hairy +  and glabrous +
pubescent +  and glabrous +
3.5 cm35 mm <br />0.035 m <br /> (?) +  and 26 cm260 mm <br />0.26 m <br /> (?) +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
subsessile +  and sessile +
1.5-3 times longer than +
bisexual +  and sterile +
terete +  and compressed +
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
not papillate +
Elymus lanceolatus var. riparius +
Elymus lanceolatus subsp. riparius +
Elymus lanceolatus +
subspecies +
membranous +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
inconspicuous +
unequal +
aquatic +  and terrestrial +