quackgrass

Elymus repens (L.) Gould

Description from Invasive.org

Quackgrass is a perennial, cool-season, rhizomatous grass. The stems are green to whitish, erect to decumbent and can grow to 3 ft (0.9 m) tall. The leaves are 6-15.7 in. (15-40 cm) long and usually have a pair of prominent auricles at the base. Flowering occurs in May to September. The flower spikes are 3.9-11.8 in. (10-30 cm) long and have 3-8 florets per spikelet. Quackgrass is native to Europe and occurs in pastures, gardens, roadsides, and other disturbed open areas.

Resources


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Plant(s)
Ohio State Weed Lab , The Ohio State University, Bugwood.org
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Plant(s)
Elizabeth Bella, AECOM, Bugwood.org
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Plant(s)
Steve Dewey, Utah State University, Bugwood.org
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Fruit(s)
Dr. Lynn Clark and Anna Gardner, Iowa State University, Bugwood.org
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Fruit(s) infructescence
Dr. Lynn Clark and Anna Gardner, Iowa State University, Bugwood.org
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Feature(s)
Ohio State Weed Lab , The Ohio State University, Bugwood.org
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Feature(s) Leaf collar region
Steve Dewey, Utah State University, Bugwood.org
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Plant(s)
Steve Dewey, Utah State University, Bugwood.org
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Plant(s)
Steve Dewey, Utah State University, Bugwood.org
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Root(s) Roots
Steve Dewey, Utah State University, Bugwood.org
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Infestation
Steve Dewey, Utah State University, Bugwood.org
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Floret(s) Florets in ventral view (left) and dorsal view (far right)
Julia Scher, USDA APHIS PPQ, Bugwood.org
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Plant(s) Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 1: 283.
USDA NRCS PLANTS Database , USDA NRCS PLANTS Database, Bugwood.org
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Plant(s) Hitchcock, A.S. (rev. A. Chase). 1950. Manual of the grasses of the United States. USDA Misc. Publ. No. 200. Washington, DC.
USDA NRCS PLANTS Database , USDA NRCS PLANTS Database, Bugwood.org
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Plant(s) USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service.
USDA NRCS PLANTS Database , USDA NRCS PLANTS Database, Bugwood.org
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Distribution