I noticed some interesting things about a tree we passed on a day out in the Lake District. There was moss growing on the trunk of the tree and presumably on at least one branch. Some ferns were growing on a branch and on the trunk of the tree. In our garden that ferns usually grow in areas where moss has already become established. (I once studied the growth of a fern and wrote a post about it.)
It was impossible for me to stand far enough away from the tree to fit all of it in a single shot. In January the only leaves were a few from last year, which had not fallen to the ground.