You are definitely in the right group. It has been recently revised by Ivanovich et al. (2025). I think you can rule out coniferarum because the excipular cortex is thin and even to the base. I think this would key out to Lecanoropsis micans or L. saligna. The apothecia are distinctly glossy in the former -- hard to say for sure from the photos -- and the spore sizes are slightly different, but your measurements are in range for both.
https://phytotaxa.mapress.com/pt/article/view/phytotaxa.695.1.1
I have a draft key for the West Coast of N Am using the key in Ivanovich et al. as a starting point.
