Elymus repens is a species of grass that spreads widely through underground stems, making it common in many parts of the world. It matters because it can grow aggressively in fields and gardens, sometimes becoming a pest that interferes with crops and other plants, though it also provides food and ground cover in natural ecosystems.
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quackgrass
SPECIES
Common Name: chiendent
via GBIF · Kew POWO
Elymus repens, commonly known as couch grass /kuːtʃ/, is a very common perennial species of grass native to most of Europe, Asia, the Arctic, and northwest Africa. It has been brought into other mild northern climates for forage or erosion control, but is often considered a weed.
Other names include common couch, twitch, quick grass, quitch grass (also just quitch), dog grass, quackgrass, scutch grass, and witchgrass.
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