After talking about this for a while this is where we arrived. Physconia can turn quite green when wet, even though it normally appears white. The only other Physconia in the region that has apothecia and seemed similar was P. californica, which seems to have smaller apothecia and wider lobes. Here are two points in the discussion where we talked about this photo: https://www.youtube.com/watch?feature=player_embedded&v=s9tKSUoxV8o#t=1364 https://www.youtube.com/watch?feature=player_embedded&v=s9tKSUoxV8o#t=2286
icosahedron
2014-03-30
2014-03-30 1401
United States of America, California, Mt. Diablo St. Park