The only leaves available to me at this time of year "July" is the little tongue shaped "bracts" of the Linden or lime tree. The function of these bracts I believe is to protect the tree flower and seeds. It's just that the leaves are very pale and I'm guessing might not be functional as a solar panel as a normal leaf. Is this true and do you think that they might serve as a quality input for a compost pile?
It is a natural leaf, so surely it will be beneficial organic matter in the compost pile. The question to ask is whether it is high in nitrogen or carbon. It will be higher in nitrogen if it is green and higher in carbon if it is brown. This will affect the ration of nitrogen to carbon and you want an optimal 30:1 carbon to nitrogen ration.