Fig leaves curling, have brown stains on the back *Pics*
My uncle's Celeste fig is probably around 50 years old -- though really, the current tree is an established sprout of the original tree. It's nice-sized and produces well.
Yesterday, my uncle noticed that some of the leaves are starting to curl up, and some of those have a reddish-brown stain on the back -- like the edge of a paper towel that has been touched to water, and allowed to soak some up.
It doesn't look like or fit the description of rust, and it's hard to find pictures of fig leaf curl... the same organism apparently causes peach leaf curl, and the leaves of peach trees with it end up badly deformed. That isn't the case here, but I don't know if it acts the same on fig trees.
Here are some pictures of a typical affected leaf:
Does anyone know what this is? Thank you for any information you may have! :)