Edited by Minnesota Scientific and Natural Areas, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Cephas, some rights reserved (CC BY-SA)
- 2. (c) Radu Chibzii, some rights reserved (CC BY-SA)
- 3. (c) Jason M Crockwell, some rights reserved (CC BY-NC-ND), uploaded by Jason M Crockwell
- 4. no rights reserved
- 5. (c) Eric Knopf, some rights reserved (CC BY-NC), uploaded by Eric Knopf
- 6. (c) Jill Lee, some rights reserved (CC BY-SA)
- 7. Masebrock, no known copyright restrictions (public domain)
- 8. (c) Greg Funka, some rights reserved (CC BY-NC), uploaded by Greg Funka
- 9. (c) Eli Sagor, some rights reserved (CC BY-NC)
- 10. (c) Owen Strickland, some rights reserved (CC BY-NC), uploaded by Owen Strickland
- 11. (c) dogtooth77, some rights reserved (CC BY-NC-SA)
- 12. (c) Dan Mullen, some rights reserved (CC BY-NC-ND)
- 13. (c) Leanne Wallis, some rights reserved (CC BY-NC), uploaded by Leanne Wallis
- 14. (c) peggyo, some rights reserved (CC BY-NC), uploaded by peggyo
- 15. (c) Plant Image Library, some rights reserved (CC BY-SA)
- 16. (c) Shihmei Barger 舒詩玫, some rights reserved (CC BY-NC-ND)
- 17. (c) Owen Clarkin, some rights reserved (CC BY-NC), uploaded by Owen Clarkin
- 18. (c) Keith Kanoti, Maine Forest Service, USA, some rights reserved (CC BY)
- 19. (c) Superior National Forest, some rights reserved (CC BY)
- 20. (c) Rob Routledge, Sault College, Bugwood.org, some rights reserved (CC BY)
- 21. (c) Patrick Coin, some rights reserved (CC BY-NC-SA)
- 22. (c) Nick Beck, some rights reserved (CC BY-NC-SA)
- 23. (c) Arthur Chapman, some rights reserved (CC BY)
- 24. (c) libby_orcutt, some rights reserved (CC BY-NC), uploaded by libby_orcutt
- 25. (c) timmenzies on Flickr, some rights reserved (CC BY-SA)
- 26. (c) Brad Walker, some rights reserved (CC BY-NC), uploaded by Brad Walker
- 27. (c) Joseph D Kurtz, some rights reserved (CC BY-NC), uploaded by Joseph D Kurtz
- 28. (c) Matt Lavin, some rights reserved (CC BY-SA)
- 29. (c) anonymous, some rights reserved (CC BY-SA)
- 30. (c) Kingsbrae Garden, some rights reserved (CC BY-NC-SA)
- 31. (c) Bruce Kirchoff, some rights reserved (CC BY)
- 32. (c) Maggie, some rights reserved (CC BY-NC)
- 33. (c) Joel Abroad, some rights reserved (CC BY-NC-SA)
- 34. (c) Nadiatalent, some rights reserved (CC BY-SA)
- 35. (c) Kerry Woods, some rights reserved (CC BY-NC-ND)
- 36. (c) Anita, some rights reserved (CC BY-NC)
- 37. (c) evening, some rights reserved (CC BY-NC), uploaded by evening
- 38. (c) aarongunnar, some rights reserved (CC BY), uploaded by aarongunnar
- 39. (c) Michael Rayner, some rights reserved (CC BY-NC), uploaded by Michael Rayner
- 40. (c) Rob Routledge, some rights reserved (CC BY-NC), uploaded by Rob Routledge
- 41. (c) Rob Curtis, some rights reserved (CC BY-NC-SA), uploaded by Rob Curtis
- 42. (c) Liana May, some rights reserved (CC BY-NC), uploaded by Liana May
- 43. (c) Steve Guttman NYC, some rights reserved (CC BY-NC-ND)
- 44. (c) Dwayne Estes, some rights reserved (CC BY-NC), uploaded by Dwayne Estes
- 45. (c) yaoshawn, some rights reserved (CC BY-NC), uploaded by yaoshawn
- 46. (c) Anita363, some rights reserved (CC BY-NC)
- 47. (c) jimmalefyt, some rights reserved (CC BY-NC)
- 48. (c) Sherry Nigro, some rights reserved (CC BY-NC), uploaded by Sherry Nigro
- 49. (c) Derek Parker, some rights reserved (CC BY-NC-ND)
- 50. no rights reserved, uploaded by Scott Loarie
- 51. (c) niznoz, some rights reserved (CC BY-NC-SA)