Page authors: David Giblin, Don Knoke
Elymus repens
creeping wild rye

Distribution: Native to Eurasia; Alaska to Greenland and south to California, Texas, and North Carolina.

Habitat: Disturbed, open areas.

Flowers: June-August

Origin: Introduced

Conservation Status: Not of concern


Strong perennial with long, tough, wiry rhizomes, the culms erect to decumbent, up to 1 m. tall.


Sheaths open, auricles well-developed; ligules under 0.5 mm. long; blades flat, usually hairy, 5-10 mm. broad.


Inflorescence a stiff, erect spike 7-15 mm. long, the rachis not disarticulating; spikelets 5- to 6-flowered, 1 per node, crowded, about twice as long as the internodes; glumes lanceolate, awn-tipped, 5- to 7-nerved, 6-7 mm. long; lemmas slightly longer than the glumes, acute, awnless or with a straight awn up to 10 mm. long; paleas equaling the lemmas.



Accepted Name:
Elymus repens (L.) Gould
Publication: MadroƱo 9: 127. 1947.

Synonyms & Misapplications:
Agropyron repens (L.) P. Beauv. [HC]
Agropyron repens (L.) P. Beauv. var. subulatum Roem. & Schult.
Agropyron vaillantianum (Wulfen & Schreb.) Trautv.
Elytrigia repens (L.) Desv. ex B.D. Jacks.
Elytrigia repens (L.) Desv. ex B.D. Jacks. var. vaillantiana (Wulfen & Schreb.) Prokudin, orthographic variant
Elytrigia vaillantiana (Wulfen & Schreb.) Beetle, orthographic variant
Triticum repens L.
Triticum vaillantianum Wulfen & Schreb.
Additional Resources:

PNW Herbaria: Specimen records of Elymus repens in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Elymus repens checklist entry.

E-Flora BC: Elymus repens atlas page.

CalPhotos: Elymus repens photos.

USDA Plants: Elymus repens information.

18 photographs:
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