Resources
- Weed of the Week - USDA Forest Service
Selected Images
 1350056 brown knapweed Centaurea jacea Plant(s) Cindy Roche |
 5436660 brown knapweed Centaurea jacea Plant(s) Bruce Ackley |
 5436657 brown knapweed Centaurea jacea Foliage Bruce Ackley |
 5436650 brown knapweed Centaurea jacea Foliage Bruce Ackley |
 5474974 brown knapweed Centaurea jacea Foliage Rob Routledge |
 1350057 brown knapweed Centaurea jacea Flower(s) Cindy Roche |
 5436654 brown knapweed Centaurea jacea Flower(s) Bruce Ackley |
 5436658 brown knapweed Centaurea jacea Flower(s) Bruce Ackley |
 5474971 brown knapweed Centaurea jacea Flower(s) Rob Routledge |
 5474972 brown knapweed Centaurea jacea Flower(s) Rob Routledge |
 5436663 brown knapweed Centaurea jacea Flower(s) Bruce Ackley |
 5436664 brown knapweed Centaurea jacea Seed(s) Bruce Ackley |
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
Alternative content
State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org
Alternative content
Invasive Listing Sources
- Faith Campbell, 1998
- Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
- Mid-Atlantic Exotic Pest Plant Council, 2005
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- Oregon Noxious Weeds
- Pacific Northwest Exotic Pest Plant Council, 1998
- Virginia Department of Conservation and Recreation, 2009
- Washington Noxious Weeds
- WeedUS - Database of Plants Invading Natural Areas in the United States
Taxonomic Rank
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Asteridae |
| Order: Asterales |
| Family: Asteraceae |
| Genus: Centaurea |
Synonyms and Other Names
Other Common Names:
brown knapweed
| 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. |
Invasive.org is a joint project of the Center for Invasive Species and Ecosystem Health and USDA APHIS PPQ, with additional support from USDA National Institute of Food and Agriculture and USDA Forest Service. |
|
Home | Image Usage | Accessibility Policy | Privacy Policy | Contact Us
Last updated on Tuesday, May 04, 2010 at 02:41 PM