On a piece of fallen bark in coastal old growth forest of Picea sitchensis and Tsuga heterophylla.
Update: I think this may be Ricasolia amplissima subsp. sheiyi
https://accs.uaa.alaska.edu/wp-content/uploads/Ricasolia-amplissima_Assessment_FINAL_2017_12_22.pdf
A fungal thing.
Nice to see the variety of ideas!
on Populus trichocarpa bark
on old growth Populus trichocarpa
On sitka willow
Very rare on bark of 2 Fraxinus nigra and a single Thuja occidentalis.