Common names: Virginia wildrye Élyme de virginie
Endemic
Treatment appears in FNA Volume 24. Treatment on page 298.

Plants cespitose, not rhizomatous, sometimes glaucous, especially in the spikes. Culms 30-130 cm, erect to slightly decumbent; nodes 4-9, con¬cealed or exposed, usually glabrous, rarely pubescent. Leaves evenly distributed; sheaths usually glabrous, rarely hirsute, occasionally reddish or purplish; auricles absent or to 1.8 mm, pale-brown; ligules shorter than 1 mm; blades 2-14 (18) mm wide, usually spreading or lax, sometimes becoming involute, basal blades similar to the upper blades, adaxial surfaces usually smooth, sometimes scabridulous, usually glabrous, occasionally pubescent. Spikes (3) 4-16 (22) cm long, 1-2.2 (2.5) cm wide, erect, the bases often sheathed, with 2 spikelets per node, rarely with 3 at some nodes; internodes 3-5 mm long, 0.25-0.5 thick at the thinnest sections, smooth and glabrous, or scabrous, or with hairs beneath the spikelets. Spikelets 10-15 mm, appressed to slightly divergent, with (2) 3-4 (6) florets, lowest florets functional; disarticulation below the glumes and each floret, or the lowest floret falling with the glumes. Glumes subequal or equal, the basal 1-4 mm terete, indurate, without evident venation, bowed out, yellowish, glume bodies 7-15 mm long, (0.5) 0.7-2.3 mm wide, linear-lanceolate, widening above the base, 3-5 (8) -veined, usually smooth or scabridulous, margins firm, awns 3-10 (15) mm, straight; lemmas 6-10 mm, scabridulous, glabrous or villous-hirsute, awns (5) 8-20 (25) mm, straight; paleas 5-9 mm, obtuse; anthers 2-3.5 (4) mm. Anthesis usually mid-june to late July (mid-august). 2n = 28.

Distribution

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., Miss.

Discussion

Elymus virginicus is widespread in temperate North America, growing as far west as British Columbia and Arizona. It is infrequent to rare in the Rocky Mountains, western Great Plains, and southeastern coastal plain. It is a complex species, divided here into four intergrading varieties.

Selected References

None.

Key

1 Spikelets hispidulous to villous-hirsute, usually glaucous; anthesis usually in early July to mid-August Elymus virginicus var. intermedius
1 Spikelets usually glabrous or scabrous, glaucous or not; anthesis usually in mid-June to late July. > 2
2 Spikes partly sheathed; glumes 1-2.3 mm wide, strongly indurate and bowed out in the basal 2-4 mm; plants not glaucous, becoming yellowish brown or occasionally somewhat purplish at maturity Elymus virginicus var. virginicus
2 Spikes exserted; glumes (0.5)0.7-1.5(1.8) mm wide, moderately indurate and bowed out in the basal 1-2 mm; plants usually glaucous, becoming yellowish or reddish brown at maturity. > 3
3 Culms usually 70-100 cm tall, with 6-8 nodes; blades 3-15 mm wide, flat; spikes 4-20 cm long, not strongly glaucous; glumes indurate only in the basal 1 mm Elymus virginicus var. jejunus
3 Culms usually 30-80 cm tall, with 4-6 nodes; blades 2-9 mm wide, often becoming involute; spikes 3.5-11 cm long, often strongly glaucous; glumes usually indurate in the basal 1-2 mm balophilus

"decumbent" is not a number.

... more about "Elymus virginicus"
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 +
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 +
cross +, linear +  and narrowly lanceolate +
2mm;14mm +
spikelike +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
hairy +  and glabrous +
Virginia wildrye +  and Élyme de virginie +
not branching +
sometimes strongly decumbent +  and prostrate +
erect +  and slightly decumbent +
30 cm300 mm <br />0.3 m <br /> (130 cm1,300 mm <br />1.3 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 +
linear-lanceolate +  and terete +
subequal +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
widening +
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 +
pubescent +  and glabrous +
3 +, 4 +  and 9 +
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 +
4 cm40 mm <br />0.04 m <br /> (?) +  and 16 cm160 mm <br />0.16 m <br /> (?) +
subsessile +  and sessile +
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 +
Gramineae +
Elymus virginicus +
species +
membranous +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
inconspicuous +
unequal +
plant +  and cespitose +
aquatic +  and terrestrial +