Hello! Encountered some new to me marine lichens growing on a large driftwood log in Olympia, WA today. The green thallus one with dark red apothecia I’m guessing is Lecanora xylophila however I’m stumped on the black one, thought perhaps Verrucaria sp. except substrate for that genus is limited to rock. Any insights would be greatly appreciated, thank you!

Thanks for the info Scot! Going to collect a sample of it for further examination, unexpected encounter while walking dog at a park very close to my house, didn’t even have my hand lens.

Mike Halderman thank you so much! Looks like a very promising lead. I’ll follow up eventually with more details.