The purple flower of a spotted knapweed (Centaurea maculosa). This noxious weed was found on Mt. Jumbo in Missoula, Montana.

The purple flower of a spotted knapweed (Centaurea maculosa). This noxious weed was found on Mt. Jumbo in Missoula, Montana. Stock Photo
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Image details

Image ID:

C3WDBR

File size:

50.1 MB (1.3 MB Compressed download)

Releases:

Model - no | Property - noDo I need a release?

Dimensions:

5200 x 3365 px | 44 x 28.5 cm | 17.3 x 11.2 inches | 300dpi

Date taken:

9 August 2010

More information:

Spotted Knapweed was introduced to North America in the late 1800's as a contaminant in alfalfa and through discarded soil used as ship ballast.