Can’t seem to key this one. On basalt, Yakima Canyon, WA.
center areolate (not seen in photo) to rimose becoming continuous towards zonate margin
medulla - K-, I-
apothecia - one to 4 or 5 / areole, ≤ 1mm diameter
epihymenium brown
hymenium hyaline, ≤200µm*
hypothecium hyaline, ≤225µm*
*section wasn't perpendicular
spores - 8/ascus, ave ≈28x20µm
paraphyses - submoniliform
to photo gallery:
1,2 habit
3 ApoSxn
4 Asci
5 iodine