By Irwinberg
United States 
I found three of these attached to my baby hawthorne tree. I live in LI,NY. Should I interrupt the process begore something hatches or is it something else?
27 Jul, 2014
Cedar-Hawthorn Rust by the looks of it.
Have a look on this site......
http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/pests-and-problems/diseases/rusts/cedar-hawthorn-rust.aspx
Just Copy and Paste the above & Scroll down and there is a picture of it. :o))))
27 Jul, 2014