The kids said this lichen is called "Dragon's Skin" because, yes, it does look very much like the skin of a dragon.
Found on large bigleaf maple
Growing on an oak tree it has the texture of a kale leaf. Growing right next to Dendroalsia abietina.
Lobaria is a genus of lichens commonly known as "lungwort" or "lung moss" as their physical shape somewhat resembles a lung. Lobaria species are unusual in that they have a three-part symbiosis, containing a fungus, an alga and a cyanobacterium, the presence of the cyanobacterium allowing nitrogen fixation.