Fungus on Hawthorn?

[AboveBeyond]

My ground planted hawthorn has been getting these strange growths. Does anyone know what it is and how I can get rid of it? Thanks!

 

[Brian Van Fleet]

Cedar Apple rust. Prune away affected areas, discard, and disinfect tools. Keep junipers away.

 

[AboveBeyond]

Cedar Apple rust. Prune away affected areas, discard, and disinfect tools. Keep junipers away.

Thanks Brian. I've pruned the infected branches.