I've got a problem, I see very little on the branches & twigs, it's mostly on the underside of the leaves:
http://www.filadelfosrc.com/web_images/Fungus_1.JPG
http://www.filadelfosrc.com/web_images/Fungus_2.JPG
Is this some form of scale? Is it a problem that needs to be addressed? I just noticed it when pruning back some of the lower branches over my driveway. It seems to only be affecting my maples. I see a few branches that are not dead (yet), but have absolutely no foliage on them whatsoever, not sure if it's related?
Bill