Hello,

I was looking at a specimen collected in the 1880s in northern Norway and found some small black apothecia I could not identify. Macroscopically, they are small uniformly black apothecia with a distinct margin and a rough/granular hymenium. I have tried to key it out as a lichen, a bitunicate fungus, and as an inoperculate discomycete but I have so far not gotten anywhere.
I have some photos I took of it here: https://drive.google.com/open?id=1foXy7nKWaB_Y1yUu_gr3_rCWxy2Tui8y 
Photos are of 15 um sections cut on a freezing microtome after rehydrating the specimen in water. The mounting medium is water unless stated otherwise in the file name.

I think this might be a nonlichenized fungus in the Lecanoromycetes, due to the (pale) amyloid reaction in the hymenium and the lack of a thallus or associated algae. The apothecia do not seem to be associated with any of the other fungi on the specimen, either. The few spores I could find out of asci in the IKI mount are roughly 30 x 3 um and 6-7 septate. If any other preparations would be helpful, I can take more pictures. I am reluctant to be too destructive with the specimen, though, as it is a type.

Thank you,

James Mitchell