Can you identify this aggressive foliar disease?

[Eric02476]

Originally Posted by Gardadore

My first guess was Late Blight but you wrote that you eliminated that. I checked some photos online and do see a similarity.

The later stage photos do bear a modest resemblance, but several diseases look similar to one another once they've progressed that far. There hasn't been any Late Blight anywhere near my area reported yet by the state extension agency, and the weather has been hot and dry, so it's unlikely (I hope). Thanks for the good wishes.