Elymus virginicus var. halophilus

(E.P. Bicknell) Wiegand
Endemic
Treatment appears in FNA Volume 24. Treatment on page 298.

Plants glaucous, often strongly so, becoming reddish-brown at maturity. Culms usually 30-80 cm; nodes usually 4-6, often exposed; ligules and auricles often pronounced. Blades 2-9 mm wide, often becoming involute and ascending, glabrous or slightly scabrous. Spikes 3.5-11 cm, exserted; spikelets usually glabrous to scabrous, strongly glaucous; glumes 0.7-1.5 mm wide, usually somewhat indurate and bowed out in the basal 1-2 mm. Anthesis late June to late July.

Distribution

Maine, Md., N.J., N.C., Mass., Va., N.H., Del., N.Y., Pa., Conn., N.S., R.I.

Discussion

Elymus virginicus var. halophilus grows in the moist to damp soil of dunes and brackish marsh edges along the northern Atlantic coast, from Nova Scotia to North Carolina. It could be considered a relatively small, disjunct form of the largely midwestern E. virginicus var. jejunus, but its glumes are more like those of var. virginicus. Transitions to E. glabriflorus (p. 296) may be found in southern regions. Rare northern plants with hirsute spikelets (sometimes called E. virginicus i. lasiolepis Fernald) differ from var. intermedius in having grayish green, involute blades.

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 +
(E.P. Bicknell) Wiegand +
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 +
scabrous +  and glabrous +
cross +, linear +  and narrowly lanceolate +
2mm;9mm +
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 +
30 cm300 mm <br />0.3 m <br /> (80 cm800 mm <br />0.8 m <br />) +
not woody +
Maine +, Md. +, N.J. +, N.C. +, Mass. +, Va. +, N.H. +, Del. +, N.Y. +, Pa. +, Conn. +, N.S. +  and R.I. +
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 />) +
0.7mm +  and 1.5mm +
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 +
4 +  and 6 +
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 /> (?) +
3.5 cm35 mm <br />0.035 m <br /> (11 cm110 mm <br />0.11 m <br />) +
subsessile +  and sessile +
glaucous +, usually glabrous +  and scabrous +
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 var. halophilus +
Elymus virginicus +
variety +
membranous +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
inconspicuous +
unequal +
aquatic +  and terrestrial +