Anyone know what this is?

Ming dynasty

Shohin
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These reddish/orange spot are on few of my Japanese maple. Not sure if it’s on the others but show up differently bc it’s a different specie.
Thank you for the help
 

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Paradox

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Doesnt quite look like it from this information I found online



Could it be effects from the recent heat waves?
 

Paradox

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Could be, could be all the crap I feed it too. Not sure at this point

Sorry I cant be of better help, but honestly it doesn't look all that bad and soon those leaves are going to turn colors and drop off anyway. If you're concerned its the fungus, you can always cut those leaves off after they turn color and before they fall off and dispose of them in the trash. The info I read says it can stay in the leaf litter so you'll want to get rid of those leaves. I wouldn't do it yet though because the tree is still using them to photosynthesize.

Maybe @Leo in N E Illinois is more familiar with what this is
 
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