- Bromus arvensis is an annual in the grass family (Poaceae). It is a cool season, annual grass that can range in height from 14-40 in.
- Leaf blades are flat, covered with soft, distinct, thin hair, approximately 1-8 in. in length, and 1/32-1/16 of an in. wide. Sheaths are covered with dense, soft hairs. Ligules are 1/64-1/16 of an in. long and auricles are absent.
- Inflorescence is an open panicle, 2-7 in. long with spreading, usually drooping branches. Spikelets are 6 to 10 flowered, 1/2-1 in. in length, and 1/8-1/4 of an inch wide. First glumes are usually 3- to 5- nerved, 1/8-1/4 of an inch long. Second glumes are 5- to 9-nerved and 1/4-1/2 of an inch in length.
- Lemmas are broader at the upper-half, tapering to the bottom, with margins not strongly enrolled in the fruit. Awns are 1/4-3/4 in. long, somewhat twisted and widely spread at maturity.
- Ecological Threat
- Bromus arvensis can be found on a wide variety of soils that include sand, silt, and clay, but thrives on fine-textured soils. Waste areas, disturbed sites, roadsides, pastures, rangelands, and wheat fields are areas where Bromus arvensis can establish. The plant is a common component of many mixed prairie communities. It is an aggressive species that out-competes desirable vegetation for water and soil nutrients, thus reducing plant biodiversity. Forage production of perennial grasses and grazing performance is also reduced in areas infested with Bromus arvensis.
Image Sets View other image sets:
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
State Invasive List - This map identifies those states that list this species on their invasive species list. For more information, visit Invasive.org
Most Troublesome / Most Common Agricultural Weed List
This map identifies those states that consider this species either most troublesome or most common in at least one commodity. For more information, visit the MTMC project page.
|No Data for this state|
|Troublesome or Common weed in one or more crops|
Invasive Listing Sources
- California Invasive Plant Council
- Faith Campbell, 1998
- Illinois Invasive Plant List
- 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.
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- Pacific Northwest Exotic Pest Plant Council, 1998
- WeedUS - Database of Plants Invading Natural Areas in the United States
Other System LinksPlants: BRAR5
NPDN Pest: PCAATBB
NPDN Host: 36333
CategoriesCategory: Grass or Grasslike
|Common Name Reference:|| USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|
|Scientific Name Reference:||USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|