Elymus virginicus var. intermedius

(Vasey ex A. Gray) Bush
Endemic
Synonyms: Hirsutiglumis Elymus hirsutiglumis
Treatment appears in FNA Volume 24. Treatment on page 298.

Plants often partly glaucous, becoming yellowish, reddish, or slightly purplish brown at maturity. Culms usually 60-120 cm; nodes usually 4-8, concealed or exposed; auricles and ligules usually poorly developed. Blades 4-18 mm wide, lax or involute, glabrous, scabridulous, or occasionally pubescent. Spikes 6-22 cm long, sheathed or exserted; spikelets hispidulous to villous-hirsute, usually glaucous; glumes 0.8-1.2 (2) mm wide, indurate and bowed out in the basal 2-4 mm. Anthesis early July to mid-august.

Discussion

Elymus virginicus var. intermedius grows in moist, base-rich soil in open forests and thickets, especially on rocky, gravelly, or sandy banks of larger streams. It grows from the central and southern Great Plains, through the central Mississippi and Ohio valleys, to the northeastern United States and adjacent Canada, but is rare to absent south of Oklahoma to Tennessee and to Maryland.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

membranous +  and scarious +
pubescent +  and glabrous +
with hairs +  and scabrous +
4 cm40 mm <br />0.04 m <br /> (?) +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Bidentate (?) +  and Acute (?) +
Mary E. Barkworth +, Julian J.N. Campbell +  and Bjorn Salomon +
(Vasey ex A. Gray) Bush +
1 (?) +  and 3 (?) +
5 cm50 mm <br />0.05 m <br /> (?) +  and 15 cm150 mm <br />0.15 m <br /> (?) +
straight +
basal +  and apical +
from the sinus +  and terminal +
not geniculate +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
keeled +  and rounded +
3-5(8)-veined +  and sheathed +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not evident +
pubescent +  and glabrous +
scabridulous +
cross +, linear +  and narrowly lanceolate +
4mm;18mm +
spikelike +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
hairy +  and glabrous +
not branching +
sometimes strongly decumbent +  and prostrate +
erect +  and slightly decumbent +
60 cm600 mm <br />0.6 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
not woody +
Conn. +, N.J. +, N.Y. +, W.Va. +, Del. +, D.C. +, Wis. +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. (Labr.) +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Mass. +, Maine +, N.H. +, R.I. +, Vt. +, Fla. +, Wyo. +, Ky. +, N.C. +, N.Mex. +, Tex. +, La. +, N.Dak. +, Tenn. +, S.C. +, Pa. +, Va. +, Md. +, Ala. +, Kans. +, Nebr. +, Okla. +, S.Dak. +, Ark. +, Ill. +, Ga. +, Ind. +, Iowa +, Ariz. +, Ohio +, Mo. +, Minn. +, Mich. +  and Miss. +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
3 +  and 4 +
laterally compressed +  and terete +
(0)1-7-veined +
shorter than to longer than the adjacent florets +
scabridulous +  and smooth +
subequal +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.8mm +  and 1.2mm +
uncinate +
solid +  and hollow +
1.5 cm15 mm <br />0.015 m <br /> (?) +
0.3 cm3 mm <br />0.003 m <br /> (?) +  and 0.5 cm5 mm <br />0.005 m <br /> (?) +
0.2 cm2 mm <br />0.002 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
ciliate +  and scabrous +
distributed +
villous-hirsute +  and glabrous +
scabridulous +
linear-lanceolate +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
stiffly membranous +  and coriaceous +
erose +  and entire +
acute +, rounded +  and truncate +
1 cm10 mm <br />0.01 m <br /> (?) +
membranous +
inconspicuous +
lanceolate +
fleshy +  and membranous +
exposed +  and concealed +
pubescent +  and glabrous +
4 +  and 8 +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
slightly longer +
subequal +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
dry +  and fleshy +
spikelike +
hirsute +  and glabrous +
6 cm60 mm <br />0.06 m <br /> (?) +  and 22 cm220 mm <br />0.22 m <br /> (?) +
subsessile +  and sessile +
glaucous +, hispidulous +  and villous-hirsute +
bisexual +  and sterile +
terete +  and compressed +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
not papillate +
Hirsutiglumis +  and Elymus hirsutiglumis +
Elymus virginicus var. intermedius +
Elymus virginicus +
variety +
membranous +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
inconspicuous +
unequal +
purplish brown +, reddish +  and yellowish +
aquatic +  and terrestrial +