| 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 |
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| 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. |
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Identification, Biology, Control and Management Resources
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| Selected Images from Invasive.org | View 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 Archive, The Ohio State University, Bugwood.org Additional Resolutions & Image Usage |
 Stem(s); Ohio State Weed Lab Archive, 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, 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 Alternative content
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 State(s) Where Reported invasive. Based on state level agency and organization lists of invasive plants from WeedUS database. Alternative content
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