Photos:
- 1. (c) Steve Guttman, some rights reserved (CC BY-NC-ND)
- 2. (c) Kingsbrae Garden, some rights reserved (CC BY-NC-SA)
- 3. (c) Biopix, some rights reserved (CC BY-NC)
- 4. (c) Wikimedia Commons, some rights reserved (CC BY)
- 5. (c) botanygirl, some rights reserved (CC BY), uploaded by botanygirl
- 6. (c) Kari Pihlaviita, some rights reserved (CC BY-NC)
- 7. (c) Alastair Rae, some rights reserved (CC BY-SA)
- 8. (c) Gravitywave, some rights reserved (CC BY-NC-SA)
- 9. (c) Phil Sellens, some rights reserved (CC BY)
- 10. (c) Josh*m, some rights reserved (CC BY-NC-SA)
- 11. (c) Hörður Kristinsson, some rights reserved (CC BY-NC)
- 12. (c) Tero Laakso, some rights reserved (CC BY-SA)
- 13. (c) AnneTanne, some rights reserved (CC BY-NC-SA)
- 14. (c) Torsten Eriksson, some rights reserved (CC BY-NC), uploaded by Torsten Eriksson
- 15. (c) Giorgio___, some rights reserved (CC BY-NC-SA)
- 16. (c) José María Escolano, some rights reserved (CC BY-NC-SA)
- 17. (c) c michael hogan, some rights reserved (CC BY-NC-SA), uploaded by c michael hogan
- 18. (c) Mikko Heikkinen, some rights reserved (CC BY), uploaded by Mikko Heikkinen
- 19. (c) Don Henise, some rights reserved (CC BY)
- 20. (c) Jörg Hempel, some rights reserved (CC BY-SA)
- 21. (c) Kari Pihlaviita, some rights reserved (CC BY-NC), uploaded by Kari Pihlaviita
- 22. (c) Peter Fenďa, some rights reserved (CC BY-NC-ND)
- 23. (c) Joan Simon, some rights reserved (CC BY-SA)
- 24. (c) Lars Falkdalen Lindahl, some rights reserved (CC BY-NC-SA)
- 25. (c) M. Goff, some rights reserved (CC BY-NC-SA), uploaded by M. Goff
- 26. (c) Tim Waters, some rights reserved (CC BY-NC-ND)
- 27. (c) Shandchem, some rights reserved (CC BY-ND)
Compiled by Keith W. Larson,
some rights reserved
(CC BY-SA)
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