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Cottonwood Woodlands of Theodore Roosevelt National Park

common ragweed 1
Ambrosia artemisiifolia
western ragweed 2
Ambrosia psilostachya
Common sunflower 3
Helianthus annuus
rough cocklebur 4
Xanthium strumarium

Edited by Craig Whippo, some rights reserved (CC BY-SA)

Photo Credits

  • 1. (c) Erik Jørgensen, some rights reserved (CC BY-NC-SA)
  • 2. (c) Flickr, some rights reserved (CC BY-NC)
  • 3. (c) Matthias Barth, some rights reserved (CC BY-NC)
  • 4. (c) Dinesh Valke, some rights reserved (CC BY-NC-SA)

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