smooth brome USDA PLANTS Symbol: BRIN2
U.S. Nativity: Exotic
Habit: Grass or Grasslike
Bromus inermis Leyss.

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Taxonomic Rank: Liliopsida: Cyperales: Poaceae
Synonym(s): awnless brome, Hungarian bromegrass
Native Range: Eurasia (BAIL); temp. Asia, Europe, and U.S.-NC, NE, NW (GRIN)

Smooth brome is a perennial grass that is 1 -3 ½ ft. (0.3-1.1 m) tall. The leaves are alternate, 0.25-0.75 in. (0.6-1.9 cm) wide, 6-15 in. (15.2-38 cm) long, glabrous and flat. Flowers are contained in drooping panicles and appear in early to mid-summer. Each branch of the inflorescence has several purplish spikelets, each containing 7-10 flowers. This grass prefers sunny areas along roadsides and also in fields, pastures and prairies. Smooth brome is a native of Europe and was introduced into the United States in the late 1800’s.

Identification, Biology, Control and Management Resources

Selected Images from Invasive.orgView All Images at Invasive.org


Plant(s); in habitat
Robert Vidéki, Doronicum Kft., Bugwood.org
Additional Resolutions & Image Usage

Stem(s);
Ohio State Weed Lab , The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Stem(s);
Ohio State Weed Lab , The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

Stem(s); collar and sheath.
Joseph M. DiTomaso, University of California - Davis, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
John M. Randall, The Nature Conservancy, Bugwood.org
Additional Resolutions & Image Usage

Flower(s); Impetuous anthers
John M. Randall, The Nature Conservancy, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
John M. Randall, The Nature Conservancy, Bugwood.org
Additional Resolutions & Image Usage

Flower(s); Full view of panicle
John M. Randall, The Nature Conservancy, Bugwood.org
Additional Resolutions & Image Usage

Flower(s); close-up of inflorescence
Dave Powell, USDA Forest Service (retired), Bugwood.org
Additional Resolutions & Image Usage

Seed(s);
Bruce Ackley, The Ohio State University, Bugwood.org
Additional Resolutions & Image Usage

EDDMapS Distribution:
This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org
 


State(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.

U.S. National Parks where reported invasive:
Badlands National Park (South Dakota)
Dinosaur National Monument (Colorado)
Grand Canyon National Park (Arizona)
Rocky Mountains National Park (Colorado)
Saint Croix National Scenic Riverway (Wisconsin)
Scotts Bluff National Monument (Nebraska)
Theodore Roosevelt National Park (North Dakota)
Yellowstone National Park (Wyoming)



Invasive Listing Sources:
City of Ann Arbor Michigan Parks and Recreation
Faith Campbell, 1998
Hoffman, R. & K. Kearns, Eds. 1997. Wisconsin manual of control recommendations for ecologically invasive plants. Wisconsin Dept. Natural Resources, Bureau of Endangered Resources. Madison, Wisconsin. 102pp.
Indiana Native Plant and Wildflower Society
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
Kentucky Exotic Pest Plant Council
Missouri Department of Conservation,
Pacific Northwest Exotic Pest Plant Council, 1998