On white Pine
My second time finding this interesting lichen in the Bay Area. Again, it was growing on the Miocine bivalve fossil rocks in what I think is the Briones Formation. Despite lots and lots of rocks like this at Shell Ridge, this was the only little patch of Dermatocarpon I found on my walk.
Very small pins on white background.
In a pan that I scorched a little potato, broccoli, and garlic dish in and before I left town for a week I put some boiling water in it and we'll forgot about it. Apparently I sterilized a perfect growth medium for this organism
Psora again? Totally thought this was a liverwort at the time.