BugwoodWiki Article

reed canarygrass
Phalaris arundinacea L.

Overview

Appearance
Phalaris arundinacea is a cool-season perennial grass that grows to 6 ft. (1.7 m) tall. Reed canarygrass is variable in morphology, so characteristics may depend upon the habitat.
Foliage
Leaf blades are flat, 1-4 ft. (0.3-1.2 m) long, up to 0.75 in. (1.9 cm) wide, glabrous and taper gradually. The ligule is membranous (transparent) and long.
Flowers
The spreading flower/seed heads arise from hairless stems and can be green, purple, or brown in color and usually 3-6 in. (7.6-15.2 cm) in length. Flowering occurs from May to July.
Fruit
The inflorescence color changes from green to purplish to tan as the seeds mature. There are both sterile and fertile lemmas.
Ecological Threat
Phalaris arundinacea can quickly dominate wetlands, ditches, prairie potholes, and other sites with moist soil. It can exclude all other vegetation and is extremely difficult to eradicate once established. Nativity of this plant is debated; it is native to Europe and possibly parts of Asia, but it may also be native to the northwestern United States. Aggressive behavior that is exhibited in many parts of the central and western United States may be a result of escaped cultivars that were bred for vigor and quick growth.

Resources

Selected Images


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1196077

reed canarygrass
Phalaris arundinacea
Flower(s)
Tom Heutte
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1196187

reed canarygrass
Phalaris arundinacea
Plant(s)
Jamie Nielsen
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1196188

reed canarygrass
Phalaris arundinacea
Infestation
Jamie Nielsen
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1196192

reed canarygrass
Phalaris arundinacea
Flower(s)
Jamie Nielsen
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1334146

reed canarygrass
Phalaris arundinacea
Infestation
Chris Evans
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1334151

reed canarygrass
Phalaris arundinacea
Flower(s)
Chris Evans
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1334153

reed canarygrass
Phalaris arundinacea
Infestation
Chris Evans
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5308051

reed canarygrass
Phalaris arundinacea
Fruit(s)
Steve Hurst

Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

State Regulated List

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Liliopsida
Subclass: Commelinidae
Order: Cyperales
Family: Poaceae
Genus: Phalaris

Other System Links

Plants: PHAR3
Bayer: TYPAR
GRIN: 27512
ITIS: 41335
NPDN Pest: PCACHBA
NPDN Host: 22010

Synonyms and Other Names

Other Common Names:
reed canary grass

Related Scientific Names:

Phalaroides arundinacea L.(Synonym)

Categories

Category: Aquatic
Category: Grass or Grasslike