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 red-brown, 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 ovate-lanceolate, 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.
Stephen J. Darbyshire +  and Leon E. Pavlickf +
Gaudin +
Chewing's fescue +
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. +
Introduced +
Festuca nigrescens +
Festuca rubra subsp. commutata +
Festuca rubra +
subspecies +