Thinopyrum junceum

(L.) Á. Löve
Common names: Russian wheatgrass
Synonyms: Elytrigia juncea Elymus farctus Agropyron junceum
Treatment appears in FNA Volume 24. Treatment on page 376.

Plants not cespitose, rhizomatous. Culms 27-49 cm, glabrous; lowest internode plus sheath 3-8 mm thick. Sheaths glabrous; auricles absent; ligules 0.5-1.5 mm; blades 2-4 mm wide, convolute, abaxial surfaces glabrous, adaxial surfaces scabrous to densely pubescent, with 3-8 ribs, ribs narrow, prominent, margins not conspicuously thickened. Spikes 4-55 cm, erect; internodes 12-28 mm; rachises glabrous; disarticulation in the rachises. Spikelets 14-30 mm, appressed to the rachises, with 4-8 florets. Glumes lanceolate, glabrous, midveins slightly longer and more prominent than the lateral-veins, apices obtuse to acute, often mucronate, margins not hyaline; lower glumes 10-18 mm, keeled, keels prominent; upper glumes 9-16 mm; lemmas 10-17 mm long, 2-4.5 mm wide, glabrous; paleas 9-14 mm, keels ciliate for almost their entire length; anthers 6-12 mm. 2n = 42, 56.

Discussion

Thinopyrum junceum is native to the coast of Portugal, the Mediterranean, and the Black Sea. In the Flora region, it has been found on the coasts of southern California and Nova Scotia. In its native range, it grows on maritime rocky coasts, shifting beach sands, and, occasionally, by brackish water near river mouths.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number."-3timesthelengthof" is not declared as a valid unit of measurement for this property.

... more about "Thinopyrum junceum"
membranous +  and scarious +
scabrous +  and densely pubescent +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
mucronate +, obtuse +  and acute +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
Mary E. Barkworth +
(L.) Á. Löve +
1 (?) +  and 3 (?) +
basal +  and apical +
0 cm0 mm <br />0 m <br /> (3 cm30 mm <br />0.03 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not evident +
flat +  and convolute +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
spikelike +
hairy +  and glabrous +
Russian wheatgrass +
not branching +
27 cm270 mm <br />0.27 m <br /> (49 cm490 mm <br />0.49 m <br />) +
not woody +
Wash. +, N.H. +, Oreg. +, Ariz. +, N.Mex. +, Wyo. +, N.J. +, Iowa +, Kans. +, Mont. +, N.Dak. +, Nebr. +, S.Dak. +, N.Y. +, Pa. +, Alta. +, B.C. +, N.B. +, N.S. +, Ont. +, Que. +, Sask. +, Yukon +, R.I. +, Nev. +, Colo. +, Calif. +, Ill. +, Ga. +, Idaho +, Maine +, Mass. +, Tex. +, Utah +, Mo. +  and S.C. +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
4 +  and 8 +
laterally compressed +  and terete +
shorter than to longer than the adjacent florets +
subtending +
lanceolate +
unequal +
indurate +  and coriaceous +
narrowing +
uncinate +
solid +  and hollow +
1.2 cm12 mm <br />0.012 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
awned +, mucronate +, acute +, obtuse +  and truncate +
coriaceous +
2mm +  and 4.5mm +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
membranous +
inconspicuous +
lanceolate +
fleshy +  and membranous +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
not hyaline +
concealed +  and prominent +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
slightly longer +
subequal +
0.9 cm9 mm <br />0.009 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
dry +  and fleshy +
spikelike +
3 +  and 8 +
disarticulating +
4 cm40 mm <br />0.04 m <br /> (55 cm550 mm <br />0.55 m <br />) +
subsessile +  and sessile +
bisexual +  and sterile +
diamond--shaped +
1.4 cm14 mm <br />0.014 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
not papillate +
Elytrigia juncea +, Elymus farctus +  and Agropyron junceum +
Thinopyrum junceum +
Thinopyrum +
species +
membranous +
0.9 cm9 mm <br />0.009 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
inconspicuous +
plant +  and not cespitose +
aquatic +  and terrestrial +