Elymus repens

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Elymus repens (L.) Gould

Poaceae

Life form: grass
Usage: economic plant

Exposure: sun  

Moisture: moist

Soil: sandy loam - Soil: gritty loam - Soil: sandy clay

Arrangement: alternate
Leaves: decidious

Shape: linear

Division: simple

Shape: not specified
Fruit: caryopsis

 

Inflorescence: spike

Petals: not specified
Habit: not specified

Growth form: not specified

Taxonomy

Divisio:
Magnoliophyta
Subdivisio:
Magnoliophytina
Classis:
Liliopsida
Subclassis:
Commelinidae
Superordo:
Poanae
Ordo:
Poales

Elymus repens, commonly known as couch grass, is a grass.

Naming

Elymus repens was already described and the name validly published by Carl Linnaeus. It was Frank Walton Gould, however, who reclassified it into todays valid botanical systematics in 1947.

Taxonomy

Elymus repens is a species in the genus Elymus which contains approximately 235 to 310 species and belongs to the family of the Poaceae (Grass Family).

Characteristics

Elymus repens - inflorescence

Growth

The grasses are comparatively fast-growing and reach heights of 30 to 120 centimetres. The plants reach a width of 30 to 60 centimetres.

Leaves

Elymus repens is deciduous. The dark-green, simple leaves are alternate. They are linear with entire margins and parallel venation.

Flowers and Fruits

Elymus repens produces flowers that are arranged in spikes from June to August.

The grasses produce brown caryopses in spring.

Root System

The plants form rhizomes.

Distribution

Elymus repens is native to the whole of Europe, eastern Canada, Maine, Sibiria and North Africa and is naturalized in the US and Mexico.

Cultivation

The grasses prefer a sunny situation on moist soil. They prefer sandy-loamy, gritty-loamy or sandy clay soil with a pH between 5,2 and 7,8. The plants need a soil depth of at least 36 centimetres for good growth.

Uses

The recommended planting distance is 30 to 45 centimetres.

Maintenance and Propagation

Cultivars

Pests and Diseases

Literature

  • Walter Erhardt, Erich Götz, Nils Bödeker, Siegmund Seybold: Der große Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
  • Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.

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