HYPP-A Unité de Malherbologie & Agronomie
Weed Science & Agronomy
INRA-Dijon

Bayer Code : agrre

Scientific name: Elytrigia repens (L.) Nevski

Synonym(s) of Sc. name: Agropyron repens (L.) P. de Beauvois, Elymus repens (L.)

Classification: Gramineae, Monocotyledonous

Common name: common couch-grass

Synonym(s) of Common name:

Name per country : DE : Gemeine Quecke ; ES : grama del norte ; FR : chiendent rampant ; IT : falsa gramigna ; PT : grama-francesa ; EN : common couch (GB), EN : quack grass (U.S.A.) ; NL : kweek ; DK : almindelig kvik

Biological type: Perennial, Perennial with rhizomes

Seed snapshot Seed:

.

Seedling snapshot Seedling:

- Plant propagates vegetatively by rhizomes; establishment from seedling is rare.

- Shoot rolled, cylindrical leaf sheath, fused and pubescent.

- Leaf blade 20-50 times longer than broad, leaf more or less

hairy.

- Membranous and very short ligule, auricle elongated.

Adult plant snapshotAdult plant snapshotAdult plant snapshotAdult plant snapshot Adult plant:

- Height: 30-120 cm.

- Leaves longer than 30 cm, upper face hairy and lower glabrous. Base of leaf sheath often reddish. Coleoptile with two visible leaf sheaths. Diameter of rhizomes 2-3 mm, circular in cross section, sometimes angular.

-Inflorescence: Green florets

- Plant very competitive. The rhizomes used as infusion are counter-irritant, refreshing and diuretic.

- Risk of confusion with: Agropyron campestre Gordon.

- Biological type: perennial with rhizomes.

Ecological profile (click on flags): BeneLux   Present     Germany  Present     Denmark  Present     Spain  Present     France  Present     Great Britain  Present     Italy  Present     Portugal Present    

   

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