Besides Lecanora pacifica & Xanthoria parietina, there are some darker brown discs, some greyish green discs and black "smudges". Don't know if the 2 colour disc forms are also L. pacifica ?
Lovely collection David! As mentioned in the previous post, possibly two Xanthorias, some Lecanoras. Brown and black I don't know (lots and lots and LOTS of crustose lichens to learn), but black might be something along the lines of Buellia sp. cheers, frog
