Fungus on Tridents?

This is a "something" which developed in the past three days on all of my Trident maples. It has been rainy and misty these past few days. Is it a fungus? What should I treat it with?
Thank you,
Todd

I also have this on my Trident Maple but I am struggling to find out what it is.

Anyone have a clue?

Regards

Todd can take a leaf, leaves, or the tree into his County Cooperative Extension office (look in the phone book in the government section) and probably get the disease identified.

I don't know if you have anything similar in England.

I can confirm that my Trident has has the same this year.
I don't know if it is connected with the winter we had or the spell of hot weather and sun in early spring.
However, having picked off all the affect leaves, which were in the top half of the tree only, it hasn't come back?

I am convinced it is weather related.

Thanks for the info,

I also have removed all the marked leafs and moved it to a shady spot for now,

So I'll just wait and see!

Regards

I treated the leaves with a topical neem spray and noticed improvement. Many of the effected leaves fell off and new growth looked "clean". Now, this week it has come back again; still only on the Tridents. I will try to find a stronger neem product or resort to a systemic fungicide.
Best,
Todd

You're likely wasting poison and money spraying something when you don't know what it is. It may be physical damage and not a disease or insect related.

Take it in to the extension office and have them look at it. It's free. Your taxes at work.

You (generic "you") should NEVER spray before you know what it is you are spraying for.