Photos:
- 1. (c) Paul Asman and Jill Lenoble, some rights reserved (CC BY)
- 2. (c) Razzu Engen, some rights reserved (CC BY-NC-SA)
- 3. (c) Fraser Watson, some rights reserved (CC BY-NC), uploaded by Fraser Watson
- 4. (c) Steve Chilton, some rights reserved (CC BY-NC-ND)
- 5. (c) dgander, some rights reserved (CC BY-NC)
- 6. (c) Matt Lavin, some rights reserved (CC BY-SA)
- 7. (c) Patrick Alexander, some rights reserved (CC BY-NC-ND)
- 8. (c) J.R.M., some rights reserved (CC BY-NC-SA)
- 9. (c) Carrie Seltzer, some rights reserved (CC BY-NC), uploaded by Carrie Seltzer
- 10. (c) TCDavis, some rights reserved (CC BY-NC-ND)
- 11. (c) dbarronoss, some rights reserved (CC BY-NC-ND)
- 12. (c) Don Loarie, some rights reserved (CC BY), uploaded by Don Loarie
- 13. (c) minjlee, some rights reserved (CC BY-NC), uploaded by minjlee
- 14. (c) Dan Mullen, some rights reserved (CC BY-NC-ND)
- 15. (c) Smithsonian Institution, National Museum of Natural History, Department of Botany, some rights reserved (CC BY-NC-SA)
- 16. (c) amy_buthod, some rights reserved (CC BY-NC-SA)
- 17. (c) Lindsey K. Wise, some rights reserved (CC BY), uploaded by Lindsey K. Wise
- 18. (c) John Ratzlaff, some rights reserved (CC BY-NC-ND), uploaded by John Ratzlaff
- 19. (c) ellen hildebrandt, some rights reserved (CC BY-NC), uploaded by ellen hildebrandt
- 20. (c) Erin and Lance Willett, some rights reserved (CC BY-NC-ND)
- 21. (c) Susan Adams, some rights reserved (CC BY-NC-SA)
- 22. (c) Jason Singhurst, some rights reserved (CC BY-NC), uploaded by Jason Singhurst
- 23. (c) Gary Nored, some rights reserved (CC BY-NC)
- 24. (c) James Gaither, some rights reserved (CC BY-NC-ND)
- 25. (c) Bill Freiheit, some rights reserved (CC BY-NC), uploaded by Bill Freiheit
- 26. (c) Carolannie--slow return, some rights reserved (CC BY-NC-ND)
- 27. (c) Jenny Smith, some rights reserved (CC BY-NC), uploaded by Jenny Smith
- 28. (c) J. N. Stuart, all rights reserved, uploaded by J. N. Stuart
- 29. (c) Victor W Fazio III, some rights reserved (CC BY-NC), uploaded by Victor W Fazio III
- 30. (c) Allison Del Gizzi, some rights reserved (CC BY-NC), uploaded by Allison Del Gizzi
- 31. (c) Kyla Rushton, some rights reserved (CC BY-NC), uploaded by Kyla Rushton
- 32. (c) Stan Shebs, some rights reserved (CC BY-SA)
- 33. (c) Andrew Hollander, some rights reserved (CC BY-NC-SA)
- 34. (c) Vincent Scheidt, some rights reserved (CC BY-NC), uploaded by Vincent Scheidt
- 35. (c) 2004 Robert Sivinski, some rights reserved (CC BY-NC)
- 36. (c) Andrey Zharkikh, some rights reserved (CC BY)
- 37. (c) CAJC: in the Rockies, some rights reserved (CC BY-NC-ND)
- 38. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 39. (c) Joanne Toler, some rights reserved (CC BY-NC), uploaded by Joanne Toler
- 40. (c) Matt Lavin from Bozeman, Montana, USA, some rights reserved (CC BY-SA)
- 41. (c) pam_reschke, some rights reserved (CC BY-NC), uploaded by pam_reschke
- 42. (c) Arches National Park, some rights reserved (CC BY)
- 43. (c) ClatieK, some rights reserved (CC BY-ND)
- 44. (c) Te Chang, some rights reserved (CC BY-NC), uploaded by Te Chang
- 45. (c) luckat, some rights reserved (CC BY-NC), uploaded by luckat
- 46. (c) Joe Decruyenaere, some rights reserved (CC BY-SA)
- 47. (c) Søren Holt, some rights reserved (CC BY-NC-SA)
- 48. (c) 2014 Zoya Akulova, some rights reserved (CC BY-NC)
- 49. (c) Pat Deacon, some rights reserved (CC BY-NC), uploaded by Pat Deacon
- 50. (c) David Bellamy, some rights reserved (CC BY-NC), uploaded by David Bellamy
- 51. (c) James N. Stuart, all rights reserved, uploaded by James N. Stuart
- 52. (c) Emőke Dénes, some rights reserved (CC BY-SA)
- 53. (c) easmith2, some rights reserved (CC BY-NC), uploaded by easmith2
- 54. (c) Jon Sullivan, some rights reserved (CC BY)
- 55. (c) Frank Mayfield, some rights reserved (CC BY-SA)
- 56. (c) George F Mayfield, some rights reserved (CC BY-SA)
- 57. (c) Ken Bosma, some rights reserved (CC BY-NC), uploaded by Ken Bosma
- 58. (c) José María Escolano, some rights reserved (CC BY-NC-SA)
- 59. (c) Peter Gorman, some rights reserved (CC BY-NC-SA)
- 60. (c) 2005 Robert Sivinski, some rights reserved (CC BY-NC)
- 61. (c) Craig Ontl, some rights reserved (CC BY-NC), uploaded by Craig Ontl
- 62. (c) Nathan Taylor, some rights reserved (CC BY-NC), uploaded by Nathan Taylor
- 63. (c) Bobby McCabe, some rights reserved (CC BY), uploaded by Bobby McCabe
- 64. (c) Matthew Herron, some rights reserved (CC BY-NC), uploaded by Matthew Herron
- 65. (c) "Kentucky Native Plant Society. Scanned by Omnitek Inc.", some rights reserved (CC BY-NC-SA)
- 66. (c) Art Mur, some rights reserved (CC BY-NC-ND), uploaded by Art Mur
- 67. (c) 2000 California Academy of Sciences, some rights reserved (CC BY-NC-SA)
- 68. (c) 2014 Richard Spellenberg, some rights reserved (CC BY-NC-SA)
- 69. (c) Gravitywave, some rights reserved (CC BY-NC-SA)
- 70. (c) Brent Franklin, some rights reserved (CC BY-NC), uploaded by Brent Franklin
- 71. (c) BJ Stacey, some rights reserved (CC BY-NC), uploaded by BJ Stacey
- 72. (c) Flavio Rocchi, some rights reserved (CC BY-NC), uploaded by Flavio Rocchi
- 73. (c) Ves, some rights reserved (CC BY-NC), uploaded by Ves
- 74. (c) Зеленкова Виктория, some rights reserved (CC BY-NC), uploaded by Зеленкова Виктория
- 75. (c) Flickr, some rights reserved (CC BY-NC)
- 76. (c) David Jeffrey Ringer, some rights reserved (CC BY-NC), uploaded by David Jeffrey Ringer
- 77. (c) Dinesh Valke, some rights reserved (CC BY-NC-SA)
- 78. (c) Bryan, some rights reserved (CC BY-NC), uploaded by Bryan
- 79. (c) Matthias Barth, some rights reserved (CC BY-NC)
- 80. (c) Eran Finkle, some rights reserved (CC BY)
- 81. (c) Samuel Brinker, some rights reserved (CC BY-NC), uploaded by Samuel Brinker
- 82. (c) Bryant Olsen, some rights reserved (CC BY-NC)
- 83. (c) Cody Porter, some rights reserved (CC BY-NC), uploaded by Cody Porter
- 84. (c) Bob Peterson, some rights reserved (CC BY-SA)
- 85. (c) Kingsbrae Garden, some rights reserved (CC BY-NC-SA)
- 86. (c) privera5, some rights reserved (CC BY-NC)
- 87. (c) Tim Waters, some rights reserved (CC BY-NC-ND)
- 88. (c) Richard Reynolds, some rights reserved (CC BY-NC), uploaded by Richard Reynolds
- 89. (c) Brad Winckelmann, some rights reserved (CC BY-NC), uploaded by Brad Winckelmann
- 90. (c) Cassiopée2010, some rights reserved (CC BY-NC-SA)
- 91. (c) Mark Kluge, some rights reserved (CC BY-NC-ND), uploaded by Mark Kluge
- 92. (c) Carlos G Velazco-Macias, some rights reserved (CC BY-NC), uploaded by Carlos G Velazco-Macias
- 93. (c) Picasa, some rights reserved (CC BY-NC-SA)
- 94. (c) oxalismtp, some rights reserved (CC BY-NC), uploaded by oxalismtp
- 95. (c) Dave Powell, USDA FS, bugwood.org, some rights reserved (CC BY)
- 96. (c) John, some rights reserved (CC BY-NC)
- 97. (c) Dwayne Estes, some rights reserved (CC BY-NC), uploaded by Dwayne Estes
- 98. (c) Peter L Achuff, some rights reserved (CC BY), uploaded by Peter L Achuff
- 99. no rights reserved, uploaded by Craig Martin
- 100. (c) Steve Jones, some rights reserved (CC BY-NC), uploaded by Steve Jones
- 101. (c) Ben VanderWeide, some rights reserved (CC BY-NC), uploaded by Ben VanderWeide
- 102. (c) Michael Kappel, some rights reserved (CC BY-NC)
- 103. (c) Sam Kieschnick, some rights reserved (CC BY), uploaded by Sam Kieschnick
- 104. (c) Carolannie---eyewitness, some rights reserved (CC BY-NC-ND)
- 105. (c) Kristian Peters, some rights reserved (CC BY-NC-SA)
- 106. (c) letebile, some rights reserved (CC BY-NC-ND), uploaded by letebile
- 107. (c) JanetandPhil, some rights reserved (CC BY-NC-ND)
- 108. (c) lisa_kingston, some rights reserved (CC BY-NC), uploaded by lisa_kingston
- 109. (c) Tom Hilton, some rights reserved (CC BY), uploaded by Tom Hilton
- 110. (c) Don Davis, some rights reserved (CC BY-NC-ND)
- 111. (c) Chuck Sexton, some rights reserved (CC BY-NC), uploaded by Chuck Sexton
- 112. (c) Annika Lindqvist, some rights reserved (CC BY), uploaded by Annika Lindqvist
- 113. (c) Doug Grinbergs, some rights reserved (CC BY-NC), uploaded by Doug Grinbergs
- 114. (c) 2009 Barry Breckling, some rights reserved (CC BY-NC-SA)
- 115. (c) Barbara Muenchau, some rights reserved (CC BY-NC), uploaded by Barbara Muenchau
- 116. (c) Lauren Baur, some rights reserved (CC BY-NC-ND), uploaded by Lauren Baur
- 117. (c) Ferran Turmo Gort, some rights reserved (CC BY-NC-SA)
- 118. (c) Nicholas Turland, some rights reserved (CC BY-NC-ND)
- 119. (c) randomtruth, some rights reserved (CC BY-NC-SA)
- 120. (c) Gernot HOCHMUELLER, some rights reserved (CC BY)
- 121. (c) Andy, some rights reserved (CC BY-NC-ND)
- 122. no rights reserved
- 123. (c) stonebird, some rights reserved (CC BY-NC-SA)
- 124. (c) Carol Jacobs-Carre, some rights reserved (CC BY-NC-ND)
- 125. (c) Jim Morefield, some rights reserved (CC BY)
- 126. (c) Nick Beck, some rights reserved (CC BY-NC-SA)
- 127. (c) Joshua (Josh) Quiring, some rights reserved (CC BY-NC), uploaded by Joshua (Josh) Quiring
- 128. (c) Charlie Hohn, some rights reserved (CC BY), uploaded by Charlie Hohn
- 129. (c) Biopix, some rights reserved (CC BY-NC)
- 130. (c) 2009 Keir Morse, some rights reserved (CC BY-NC-SA)
- 131. (c) 2003 Keir Morse, some rights reserved (CC BY-NC-SA)
- 132. Jim Pisarowicz, no known copyright restrictions (public domain)
- 133. (c) Zihao Wang, some rights reserved (CC BY), uploaded by Zihao Wang
- 134. (c) Rob Curtis, some rights reserved (CC BY-NC-SA), uploaded by Rob Curtis
- 135. (c) Harry Rose, some rights reserved (CC BY)
- 136. (c) Stefan.lefnaer, some rights reserved (CC BY-SA)
- 137. (c) jacki-dee ('retro look' option please), some rights reserved (CC BY-NC-ND)
- 138. (c) Hörður Kristinsson, some rights reserved (CC BY-NC)
- 139. (c) Dehaan, some rights reserved (CC BY-SA)
- 140. (c) Christopher Tracey, some rights reserved (CC BY-NC-SA), uploaded by Christopher Tracey
- 141. (c) 2006 Luigi Rignanese, some rights reserved (CC BY-NC)
- 142. (c) Jason Eckberg, some rights reserved (CC BY-NC), uploaded by Jason Eckberg
- 143. (c) Louis, some rights reserved (CC BY-SA)
- 144. (c) tmercado, some rights reserved (CC BY-NC)
- 145. no rights reserved, uploaded by Patrick Alexander
- 146. (c) natalie robb, some rights reserved (CC BY-NC), uploaded by natalie robb
- 147. (c) Roger Butterfield, some rights reserved (CC BY-NC-SA)
- 148. (c) Petritap, some rights reserved (CC BY-SA)
- 149. (c) Brent Miller, some rights reserved (CC BY-NC-ND)
- 150. (c) Вікторія Тротнер(Приймачук), some rights reserved (CC BY-SA)
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