Probably the only Cladonia species I can (somewhat) confidently ID, if I'm wrong please let me know haha. I wish I had more time to sit down and brush up on my microscopy skills. I've come across this Cladonia field guide if any one is interested in a key to Cladonia. I will need to set some time aside to try it out. I have a few spots I frequent where Cladonia cakes every available surface.