This lichen was found while marking boundary between the Boulder Field and Rough Ridge parking areas.
I saw several groups of lettuce lichen (I think) growing on a large boulder.
I'm fairly sure I saw this lichen at Pepperwood too, alongside Sticta limbata, but I neglected to photograph it there.
Among other things, growing on moss covered rock.
This was found growing on a tree trunk next to folios lichen and moss!
Oregon Lungwort - Thunder Creek Trail
On moss on trunk of bigleaf maple, along Titlow Hill Road, in Humboldt County California.
Lungwort is often not visible since it grows high in trees, and sometimes the branches fall, bringing it down to Earth.