What is this black fuzz on peach tree branches?

[Benja]

I noticed this short black fuzz on the branches of a ~6 year old Contender peach tree in my home orchard yesterday. It covers most branches on this tree, with two primary exceptions - last year's growth and the rough bark on trunk of the tree.
Several internet searches and a bunch of articles later, I still don't know if I should be worried about this. So, I thought I'd run it past folks here on the forum. Anybody know what this is?

 

[Turkey Creek]

I am guessing a slight surface mold, nothing to be concerned about. Take a wet rag and see if it doesn't pretty much just wipe off the branch. I am not saying clean the entire tree, just see if it wipes off easily.

 

[Benja]

I am guessing a slight surface mold, nothing to be concerned about. Take a wet rag and see if it doesn't pretty much just wipe off the branch. I am not saying clean the entire tree, just see if it wipes off easily.

Yes, it wipes off after a vigorous bit of scrubbing. I'll keep a close watch on this tree through the summer to see if continues in good health. Maybe I'll douse it with an extra round of fungicide.