Festuca rubra subsp. commutata

Gaudin
Common names: Chewing's fescue
Introduced
Synonyms: Festuca nigrescens
Treatment appears in FNA Volume 24. Treatment on page 415.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Plants without rhizomes, usually densely cespitose. Culms 25-90 cm. Sheaths redbrown, scarious near the base, puberulent or pubescent, slowly shredding into fibers; blades 0.3-0.7 (1) in diameter, conduplicate, sometimes glaucous, abaxial surfaces scabrous or smooth; abaxial sclerenchyma in narrow to broad strands; adaxial sclerenchyma rarely present. Inflorescences 4-13 (30) cm, more or less contracted, often secund; branches spreading at anthesis, scabrous on the angles. Spikelets 7-11 mm, with 3-9 florets. Glumes ovatelanceolate, acute; lower glumes 2.5-4 mm; upper glumes 3.5-5 mm; lemmas 4.5-6 mm, green or reddish violet distally, glabrous, smooth, awned, awns 1-3.3 mm; anthers 1.8-2.2 (3) mm. 2n = 28, 42.

Discussion

Festuca rubra subsp. commutata is extensively used for lawns and road verges. It is native to Europe, growing from southern Sweden southward, but is widely introduced elsewhere in the world. In the Flora region, it is common south of Alaska, Yukon Territory, and the Northwest Territories.

Selected References

None.

Lower Taxa

None.

"wider than long" is not a number."decumbent" is not a number."longest" is not a number.

membranous +  and scarious +
pubescent +  and scabrous +
3 cm30 mm <br />0.03 m <br /> (?) +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
awned +  and entire +
hispidulous +
Stephen J. Darbyshire +  and Leon E. Pavlickf +
Gaudin +
1 (?) +  and 3 (?) +
0.1 cm1 mm <br />0.001 m <br /> (?) +
straight +
basal +  and terminal +
0.1 cm1 mm <br />0.001 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
keeled +  and rounded +
swelling +
convolute +  and conduplicate +
not deciduous +  and deciduous +
not evident +
0.3 (?) +  and 0.7 (?) +
flat +, convolute +  and setaceous +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
pubescent +, scabrous +  and glabrous +
spikelike +
pubescent +  and glabrous +
Chewing's fescue +
stoloniferous +
decumbent +  and erect +
25 cm250 mm <br />0.25 m <br /> (90 cm900 mm <br />0.9 m <br />) +
not woody +
Conn. +, N.J. +, N.Y. +, Wash. +, Va. +, Del. +, D.C. +, Wis. +, W.Va. +, Pacific Islands (Hawaii) +, Mass. +, Maine +, N.H. +, R.I. +, Vt. +, Oreg. +, Wyo. +, Ala. +, Ariz. +, Ga. +, Iowa +, Ill. +, Ind. +, Ky. +, Md. +, Mich. +, Minn. +, Mont. +, N.Dak. +, Nebr. +, N.Mex. +, Pa. +, S.C. +, Tex. +, N.C. +, Tenn. +, Calif. +, Nev. +, Alaska +, Colo. +, Idaho +, Alta. +, B.C. +, Greenland +, Man. +, N.B. +, Nfld. and Labr. +, N.S. +, N.W.T. +, Nunavut +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Ohio +, Utah +  and Mo. +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
3 +  and 9 +
compressed +
reduced +
shorter or longer +
subtending +
acute +  and ovatelanceolate +
unequal +  and subequal +
not persistent +
antrorse +  and retrorse +
uncinate +
4 cm40 mm <br />0.04 m <br /> (13 cm130 mm <br />0.13 m <br />) +
1-7(9)-veined +
reddish violet +  and green +
acuminate +  and attenuate +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
coriaceous +, chartaceous +  and membranous +
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 +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
concealed +  and prominent +
2 +  and 1 +
with hispidulous apices +  and glabrous +
well-developed +
2-keeled +
spikelike +
dry +  and fleshy +
glabrous +, pubescent +  and scabrous +
5 +  and 7 +
pubescent +  and puberulent +
Introduced +
1 +  and 60 +
compressed +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Festuca nigrescens +
Festuca rubra subsp. commutata +
Festuca rubra +
subspecies +
membranous +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
parallel +  and converging +
obscure +  and prominent +
plant +  and cespitose +
aquatic +  and terrestrial +