I've been to this tree in the past. The Lobaria look a lot more crispy...
the brown lichen with white soredia, lower surface with pseudocyphallae, on branch on ground
an old example, but I thought this might be my first time seeing this in this park.
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.