The purple flower of a spotted knapweed (Centaurea maculosa). This noxious weed was found on Mt. Jumbo in Missoula, Montana.
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.
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Photo credit: © Environmental Stock Images by Streeter Photography / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: -native, centaurea, close, close-, closeup, damaging, destructive, ecological, ecology, ecosystems, environment, environmental, exotics, invasive, knapweed, maculosa, montana, noxious, perennial, spotted, usa, weeds
