| meadow knapweed |
USDA PLANTS Symbol: CEMO6 USDA ARS GRIN: 432926 ITIS: 36957 |
| Centaurea x moncktonii C. E. Britton | |
|
Taxonomic Rank: Magnoliopsida: Asterales: Asteraceae |
|
Meadow knapweed is a hybrid between brownray knapweed (Centaurea jacea L.) and lesser knapweed (Centaurea nigra L.). This perennial knapweed prefers moist roadsides, river banks, moist meadows and forest openings. Leaves are up to 6 in. (15.2 cm) long and 1 in. (2.5 cm) wide and decrease in size as they move up the stem. The lower leaves are toothed or lobed and the upper leaves are linear. Flowering occurs in May to August. Flowers are pink to purple, contained in heads and located at the tips of the branches. Bracts subtending the flower head are brown with a fringed margin. Seeds are 1/8in. (0.3 cm) long. Meadow knapweed is native to Europe. |
|
| Selected Images from Invasive.org | View All Images at Invasive.org |
 Plant(s); in flower Cindy Roche, , Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Eric Coombs, Oregon Department of Agriculture, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); seedhead Cindy Roche, , Bugwood.org Additional Resolutions & Image Usage |
 Stand; Eric Coombs, Oregon Department of Agriculture, Bugwood.org Additional Resolutions & Image Usage |
Taxonomic References:
- USDA, NRCS. 2001. The PLANTS Database, Version 3.1, National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
Invasive Listing Sources:
Partners
