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Plants of Great Chicago Wilderness

Brown Knapweed 1
Centaurea jacea
purple star-thistle 2
Centaurea calcitrapa

Edited by Renata Leite Pitman, some rights reserved (CC BY-SA)

Photo Credits

  • 1. (c) Kari Pihlaviita, some rights reserved (CC BY-NC)
  • 2. (c) Gena Bentall, some rights reserved (CC BY-NC), uploaded by Gena Bentall

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