 | 2009-10. Tar rot fungus (Rhytisma acerinum) on last year maple leaves in Sosnovka Park. Saint Petersburg, Russia, March 23, 2017Similar picturesSmall thumbnails | Use large thumbnails | View as slideshow |
| 2009-10. Tar rot fungus (Rhytisma acerinum) on last year maple leaves in Sosnovka Park. Saint Petersburg, Russia, March 23, 2017Similar picturesSmall thumbnails | Use large thumbnails | View as slideshow |
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