Photos:
- 1. (c) Fritz Flohr Reynolds, some rights reserved (CC BY-SA)
- 2. (c) bbelcher, some rights reserved (CC BY-NC), uploaded by bbelcher
- 3. (c) Laura Clark, some rights reserved (CC BY), uploaded by Laura Clark
- 4. (c) Don Verser, some rights reserved (CC BY-NC), uploaded by Don Verser
- 5. (c) Eric Keith, some rights reserved (CC BY-NC), uploaded by Eric Keith
- 6. (c) jefferykarafa, some rights reserved (CC BY-NC), uploaded by jefferykarafa
- 7. (c) Jim West, some rights reserved (CC BY-NC), uploaded by Jim West
- 8. (c) luisdlr, some rights reserved (CC BY-NC)
- 9. (c) Anna Livia Singer, some rights reserved (CC BY-NC-ND), uploaded by Anna Livia Singer
- 10. (c) Ashley M Bradford, some rights reserved (CC BY-NC), uploaded by Ashley M Bradford
- 11. (c) ellen hildebrandt, some rights reserved (CC BY-NC), uploaded by ellen hildebrandt
- 12. (c) Tony Rodd, some rights reserved (CC BY-NC-SA)
- 13. (c) dogtooth77, some rights reserved (CC BY-NC-SA)
- 14. (c) J.R.M., some rights reserved (CC BY-NC-SA)
- 15. (c) Bob O'Kennon, some rights reserved (CC BY-NC), uploaded by Bob O'Kennon
- 16. (c) batgirl2, some rights reserved (CC BY-NC)
- 17. (c) Linda Jo Conn, some rights reserved (CC BY-NC), uploaded by Linda Jo Conn
- 18. (c) Matthew Herron, some rights reserved (CC BY-NC), uploaded by Matthew Herron
- 19. (c) Evan M. Raskin, some rights reserved (CC BY), uploaded by Evan M. Raskin
- 20. (c) Bob Peterson, some rights reserved (CC BY-SA)
- 21. (c) Dolly, some rights reserved (CC BY-NC-SA), uploaded by Dolly
- 22. (c) Rosa Say, some rights reserved (CC BY-NC-ND)
- 23. (c) Chris Poling, some rights reserved (CC BY-NC), uploaded by Chris Poling
- 24. (c) Bastiaan, some rights reserved (CC BY-NC-ND)
- 25. (c) James Mickley, some rights reserved (CC BY-NC), uploaded by James Mickley
- 26. (c) MAC Camacho-Viera, some rights reserved (CC BY-NC), uploaded by MAC Camacho-Viera
- 27. (c) Shelly Wu, some rights reserved (CC BY-NC), uploaded by Shelly Wu
- 28. (c) Jed Aplaca, some rights reserved (CC BY-NC), uploaded by Jed Aplaca
- 29. (c) Mary Keim, some rights reserved (CC BY-NC-SA)
- 30. (c) Frank Mayfield, some rights reserved (CC BY-SA)
- 31. (c) Jenny Smith, some rights reserved (CC BY-NC), uploaded by Jenny Smith
- 32. (c) Kurt Nordstrom, some rights reserved (CC BY)
- 33. (c) Monica Krancevic, some rights reserved (CC BY-NC), uploaded by Monica Krancevic
- 34. (c) Carol Foil, some rights reserved (CC BY-NC-ND)
- 35. (c) Erik Danielsen, some rights reserved (CC BY-NC), uploaded by Erik Danielsen
- 36. (c) amy_buthod, some rights reserved (CC BY-NC-SA)
- 37. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 38. (c) Bill Wright, some rights reserved (CC BY-NC), uploaded by Bill Wright
- 39. (c) veravilla, some rights reserved (CC BY-NC), uploaded by veravilla
- 40. (c) 2009 Barry Rice, some rights reserved (CC BY-NC-SA)
- 41. (c) mountainkat14, some rights reserved (CC BY-NC), uploaded by mountainkat14
- 42. (c) Anita Gould, some rights reserved (CC BY-NC)
- 43. (c) Laura Kimberly, some rights reserved (CC BY-NC), uploaded by Laura Kimberly
- 44. (c) Erin Faulkner, some rights reserved (CC BY-NC), uploaded by Erin Faulkner
- 45. (c) Corey Lange, some rights reserved (CC BY-NC), uploaded by Corey Lange
- 46. (c) Andy Newman, some rights reserved (CC BY-NC), uploaded by Andy Newman
- 47. (c) Dan Mullen, some rights reserved (CC BY-NC-ND)
- 48. (c) Alan Weakley, some rights reserved (CC BY-NC), uploaded by Alan Weakley
- 49. (c) 潘立傑 LiChieh Pan, some rights reserved (CC BY-NC-SA)
- 50. (c) 2002 Bart and Susan Eisenberg, some rights reserved (CC BY)
- 51. (c) rachelgreenbelt, some rights reserved (CC BY-NC-SA)
- 52. (c) Eleanor, some rights reserved (CC BY-NC)
- 53. (c) Steve Chilton, some rights reserved (CC BY-NC-ND)
- 54. (c) grbfrog, some rights reserved (CC BY-NC), uploaded by grbfrog
- 55. (c) 2005 Luigi Rignanese, some rights reserved (CC BY-NC)
- 56. (c) Viki, some rights reserved (CC BY-NC-SA)
- 57. (c) Lauren Baur, some rights reserved (CC BY-NC-ND), uploaded by Lauren Baur
- 58. (c) Fritz Flohr Reynolds, some rights reserved (CC BY-NC)
- 59. (c) Earl McGehee, some rights reserved (CC BY-NC-ND)
- 60. (c) Suzette Rogers, some rights reserved (CC BY-NC), uploaded by Suzette Rogers
- 61. (c) timarcus, some rights reserved (CC BY-NC), uploaded by timarcus
- 62. (c) Wendell Smith, some rights reserved (CC BY)
- 63. (c) Victor Fazio, some rights reserved (CC BY-NC-SA)
- 64. (c) Jim Varnum, some rights reserved (CC BY-NC), uploaded by Jim Varnum
- 65. (c) Jasmine, some rights reserved (CC BY-NC), uploaded by Jasmine
- 66. (c) zen Sutherland, some rights reserved (CC BY-NC-SA)
- 67. (c) PINKÉ, some rights reserved (CC BY-NC)
- 68. (c) National Museum of Natural History Image Collection, some rights reserved (CC BY-NC-SA)
- 69. (c) Judith Ellen Lopez, some rights reserved (CC BY-NC-SA)
- 70. (c) marypearlivy, some rights reserved (CC BY-NC)
- 71. (c) Photo by David J. Stang, some rights reserved (CC BY-SA)
- 72. (c) Julie Pearce, some rights reserved (CC BY-NC), uploaded by Julie Pearce
- 73. (c) daryl_mitchell, some rights reserved (CC BY-SA)
- 74. (c) Vicki DeLoach, some rights reserved (CC BY-NC-ND)
- 75. (c) Daniel Folds, some rights reserved (CC BY-NC), uploaded by Daniel Folds
- 76. (c) Lori Anne, some rights reserved (CC BY-NC), uploaded by Lori Anne
- 77. (c) Kathy McAleese, some rights reserved (CC BY-NC-ND), uploaded by Kathy McAleese
- 78. (c) MBG, some rights reserved (CC BY-NC-SA)
- 79. (c) chantalchao, some rights reserved (CC BY-NC), uploaded by chantalchao
- 80. (c) Smithsonian Institution, National Museum of Natural History, Department of Botany, some rights reserved (CC BY-NC-SA)
- 81. (c) douneika, some rights reserved (CC BY-NC-SA)
- 82. (c) Sam Kieschnick, some rights reserved (CC BY), uploaded by Sam Kieschnick
- 83. (c) Jason Sharp, some rights reserved (CC BY-NC-SA), uploaded by Jason Sharp
- 84. (c) Bri Weldon, some rights reserved (CC BY)
- 85. (c) Homer Edward Price, some rights reserved (CC BY)
- 86. (c) Gravitywave, some rights reserved (CC BY-NC-SA)
- 87. (c) CameliaTWU, some rights reserved (CC BY-NC-SA)
- 88. (c) dbarronoss, some rights reserved (CC BY-NC-ND)
- 89. (c) Tom Potterfield, some rights reserved (CC BY-NC-SA)
- 90. (c) Annika Lindqvist, some rights reserved (CC BY), uploaded by Annika Lindqvist
- 91. (c) Samuel Brinker, some rights reserved (CC BY-NC), uploaded by Samuel Brinker
- 92. (c) Marie Asscherick, some rights reserved (CC BY-NC), uploaded by Marie Asscherick
- 93. (c) Josh*m, some rights reserved (CC BY-NC-SA)
- 94. no rights reserved, uploaded by Jesse Rorabaugh
- 95. (c) Kathy Cox, some rights reserved (CC BY-NC-ND), uploaded by Kathy Cox
- 96. (c) Conor McMahon, some rights reserved (CC BY-NC), uploaded by Conor McMahon
- 97. (c) Genevieve G. Mount, some rights reserved (CC BY-NC), uploaded by Genevieve G. Mount
- 98. (c) Mikael Behrens, some rights reserved (CC BY-NC), uploaded by Mikael Behrens
- 99. (c) Suzanne Cadwell, some rights reserved (CC BY-NC)
- 100. (c) Anita363, some rights reserved (CC BY-NC)
- 101. (c) botanygirl, some rights reserved (CC BY), uploaded by botanygirl
- 102. (c) mlhradio, some rights reserved (CC BY-NC)
- 103. (c) Judith Ellen Lopez, some rights reserved (CC BY-NC)
- 104. (c) Patrick Alexander, some rights reserved (CC BY-NC-ND)
- 105. (c) CameliaTWU (away for a while), some rights reserved (CC BY-NC-ND)
- 106. (c) Mark Kluge, some rights reserved (CC BY-NC-ND), uploaded by Mark Kluge
- 107. (c) NatureShutterbug, some rights reserved (CC BY)
- 108. (c) Kevin Metcalf, some rights reserved (CC BY-NC), uploaded by Kevin Metcalf
- 109. (c) scott.zona, some rights reserved (CC BY-NC)
- 110. (c) Jason Hollinger, some rights reserved (CC BY)
- 111. (c) Patrick Standish, some rights reserved (CC BY)
- 112. (c) Jack, some rights reserved (CC BY-NC), uploaded by Jack
- 113. (c) Pat Deacon, some rights reserved (CC BY-NC), uploaded by Pat Deacon
- 114. (c) José María Escolano, some rights reserved (CC BY-NC-SA)
- 115. (c) Danny Barron, some rights reserved (CC BY-NC-ND)
- 116. (c) Irvin Louque, some rights reserved (CC BY), uploaded by Irvin Louque
- 117. (c) Marcia Cirillo, some rights reserved (CC BY-NC)
- 118. (c) Matt Lavin, some rights reserved (CC BY-SA)
- 119. (c) Ann WF, some rights reserved (CC BY-NC), uploaded by Ann WF
- 120. (c) Robert J. "Bob" Nuelle, Jr. AICEZS, some rights reserved (CC BY-NC), uploaded by Robert J. "Bob" Nuelle, Jr. AICEZS
- 121. (c) Nathan Taylor, some rights reserved (CC BY-NC), uploaded by Nathan Taylor
- 122. (c) KENPEI, some rights reserved (CC BY-SA)
- 123. (c) Kerry Wixted, some rights reserved (CC BY-NC)
- 124. (c) Philip Bouchard, some rights reserved (CC BY-NC-ND)
- 125. (c) Matthew High, some rights reserved (CC BY-NC)
- 126. (c) Janet, some rights reserved (CC BY-NC-SA)
- 127. (c) David Bygott, some rights reserved (CC BY-NC-SA)
- 128. (c) Chantal Wagner Kornin, some rights reserved (CC BY-NC-ND)
- 129. (c) summerazure, some rights reserved (CC BY-NC-SA)
- 130. no rights reserved, uploaded by Evan Barker
- 131. (c) jmoralesrbpc, some rights reserved (CC BY-NC), uploaded by jmoralesrbpc
- 132. (c) Amber Leung, some rights reserved (CC BY-NC-ND), uploaded by Amber Leung
- 133. (c) circuscyaneus, some rights reserved (CC BY-NC), uploaded by circuscyaneus
- 134. (c) oakum, some rights reserved (CC BY-NC-SA)
- 135. (c) Dwayne Estes, some rights reserved (CC BY-NC), uploaded by Dwayne Estes
- 136. (c) Charles T. Bryson, USDA Agricultural Research Service, Bugwood.org, some rights reserved (CC BY)
- 137. (c) Texas Sea Grant, some rights reserved (CC BY)
- 138. (c) Andrey Zharkikh, some rights reserved (CC BY)
- 139. (c) jfolks, some rights reserved (CC BY-NC), uploaded by jfolks
- 140. (c) Forest and Kim Starr, some rights reserved (CC BY)
- 141. (c) Mary, some rights reserved (CC BY-NC), uploaded by Mary
- 142. (c) jacki-dee ('retro look' option please), some rights reserved (CC BY-NC-ND)
- 143. (c) Scott Sauer, some rights reserved (CC BY-NC), uploaded by Scott Sauer
- 144. (c) Stephen Ramirez, some rights reserved (CC BY-NC-ND), uploaded by Stephen Ramirez
- 145. (c) Jim W Estes, some rights reserved (CC BY-NC), uploaded by Jim W Estes
- 146. (c) Rob Curtis, some rights reserved (CC BY-NC-SA), uploaded by Rob Curtis
- 147. (c) USDA NRCS Wetland Science Institute., some rights reserved (CC BY-NC-SA)
- 148. (c) eknuth, some rights reserved (CC BY-NC), uploaded by eknuth
- 149. (c) Susan J. Hewitt, some rights reserved (CC BY-NC), uploaded by Susan J. Hewitt
- 150. (c) Katherine Boyle, some rights reserved (CC BY-NC), uploaded by Katherine Boyle
- 151. (c) Chuck Sexton, some rights reserved (CC BY-NC), uploaded by Chuck Sexton
- 152. (c) Harry Rose, some rights reserved (CC BY)
- 153. (c) IRRI Images, some rights reserved (CC BY-NC-SA)
- 154. (c) Zihao Wang, some rights reserved (CC BY), uploaded by Zihao Wang
- 155. (c) Ben VanderWeide, some rights reserved (CC BY-NC), uploaded by Ben VanderWeide
- 156. (c) Forest & Kim Starr, some rights reserved (CC BY)
- 157. (c) Nancy Webber, some rights reserved (CC BY-NC), uploaded by Nancy Webber
- 158. (c) Colin Chapman-Lam, some rights reserved (CC BY-NC), uploaded by Colin Chapman-Lam
- 159. (c) Stephanie Lyon, some rights reserved (CC BY-NC)
- 160. (c) Todd Jackson, some rights reserved (CC BY-NC), uploaded by Todd Jackson
- 161. (c) Steve Jones, some rights reserved (CC BY-NC), uploaded by Steve Jones
- 162. (c) Colleen M Simpson, some rights reserved (CC BY-NC), uploaded by Colleen M Simpson
- 163. (c) ShainaDeCiryan.com, some rights reserved (CC BY-NC), uploaded by ShainaDeCiryan.com
- 164. (c) Brent Franklin, some rights reserved (CC BY-NC), uploaded by Brent Franklin
- 165. (c) Alexis López Hernández, some rights reserved (CC BY), uploaded by Alexis López Hernández
- 166. (c) Pete Woodall, some rights reserved (CC BY-NC), uploaded by Pete Woodall
- 167. (c) Tony Ernst, some rights reserved (CC BY-NC-SA)
- 168. (c) "ARS Systematic Botany and Mycology Laboratory. Brazil.", some rights reserved (CC BY-NC-SA)
- 169. (c) jerickson, some rights reserved (CC BY-NC), uploaded by jerickson
- 170. (c) NC Orchid, some rights reserved (CC BY-NC)
- 171. (c) peganum, some rights reserved (CC BY-SA)
- 172. (c) prairie_celestial, some rights reserved (CC BY-NC), uploaded by prairie_celestial
- 173. (c) Judith Lopez Sikora, some rights reserved (CC BY-NC)
- 174. (c) Nicholas DeMaio, some rights reserved (CC BY-NC), uploaded by Nicholas DeMaio
- 175. (c) Cullen Hanks, some rights reserved (CC BY-NC), uploaded by Cullen Hanks
- 176. (c) Jenn Forman Orth, some rights reserved (CC BY-NC-SA)
- 177. (c) Nemo's great uncle, some rights reserved (CC BY-NC-SA)
- 178. (c) Joshua Mayer, some rights reserved (CC BY-SA)
- 179. (c) Phillip Merritt, some rights reserved (CC BY-NC-SA)
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