Selected images for squarrose knapweed (Centaurea virgata )
Squarrose knapweed is a perennial forb that can grow 12-18 in. (30.5-45.7 cm) tall. The leaves are alternate and deeply dissected. Flowering occurs in early to mid-summer, when pink flowers develop in heads at the tips of the branches. This species is sometimes confused with diffuse knapweed (Centaurea diffusa), but can be distinguished from diffuse knapweed by the floral bracts. Bracts on squarrose knapweed are curved outward and are not laterally toothed. Squarrose knapweed is native to the Mediterranean region and occurs in open disturbed sites, such as rangelands, roadsides, and grasslands.
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1624009 squarrose knapweed Centaurea virgata Plant(s) Steve Dewey |
0024099 squarrose knapweed Centaurea virgata Flower(s) Steve Dewey |
1350051 squarrose knapweed Centaurea virgata Flower(s) Cindy Roche |
1459278 squarrose knapweed Centaurea virgata Flower(s) Steve Dewey |
0024100 squarrose knapweed Centaurea virgata Plant(s) Steve Dewey |
0022001 squarrose knapweed Centaurea virgata Infestation Sara Rosenthal |
0024097 squarrose knapweed Centaurea virgata Plant(s) USDA Agricultural Research Service Archive |
0024098 squarrose knapweed Centaurea virgata Plant(s) USDA Agricultural Research Service Archive |
1459277 squarrose knapweed Centaurea virgata Infestation Steve Dewey |
1459279 squarrose knapweed Centaurea virgata Infestation Steve Dewey |
1459282 squarrose knapweed Centaurea virgata Plant(s) Steve Dewey |
5374341 squarrose knapweed Centaurea virgata Flower(s) Joseph M. DiTomaso |
