https://northwest-lichenologists.wildapricot.org/page-1816539/147522197#photo and 7 more photos
on Chiwakum Schist (near https://www.flickr.com/photos/wanderflechten/51457126895/in/dateposted/), about 2m above Icicle Creek (would be an island at high water), elevation 840m, east side Cascades, WA
1st thought Buellia; considered Lecanora oreinoides, L. marginata, L. atromarginata (compare https://lichenportal.org/cnalh/taxa/index.php?taxon=126541&clid=1151), Porpiia, but none seemed to fit. What am I missing?
Also, columns of photobiont extending up through hymenium and epithecium, present on several different apothecia which I sectioned, are something new to me - https://northwest-lichenologists.wildapricot.org/page-1816539/147522191#photo
K neg
apothecia ≤ 1.6mm
pol neg H2O
epi (≅15µm) greenish or brownish
hym ≅ 70µm
subhym? light brown ≅ 10µm
hypothecium dark ≅ 220µm
spores 8/asc, ave 10.5 x 5 µm
paraph ≅ 1 µm
