Photo: A strange plant pathogen

908 of 1239

This bulbous growth is known as cedar-apple rust (Gymnosporangium juniperi-virginianae), a plant pathogen that occurs where Eastern red-cedar and apple or crabapple trees live together. This growth is called a gall, and is found on a cedar tree.

Would you like to see your nature photo featured on TreeHugger? Join the TreeHugger Photo Pool on Flickr and add yours to the group!

908 of 1239

More Slideshows