The only lichens I found were not quite portable.
|A crust lichen, probably a pimple crust.|
|On another rock, closer to the edge of the bush, more exposed to occasional sunlight, paler green|
These were finer-grained, smoother and greener than the whitish grey bulls-eye lichen I see on many rocks, usually in more exposed areas. In this shady patch of forest, there are few exposed rocks, but most of them carried the green patches. I couldn't identify them.