I find this fascinating! What I have been calling C. chrysenteron is quite common in my area. Now I will need to put it under a scope and slice it more often.
Most commonly I find it with Douglas-fir (Pseudotsuga menziesii) at Mt. Tabor Park, about 10 blocks away from me. But I also find something similar to this, quite small, probably under 2-inches cap diameter (=5cm) under Quercus palustris in a landscape planting 4-5 blocks away from me adjacent to SE Division street. Have cultivated the material at View, Clark Co., WA and at Jones Creek Tree Farm, Clackamas Co., OR. Most of the material displayed at the Oregon Mycological Society’s Fall Mushroom Show is larger diameter material, maybe 4-5 inches across the cap (10-13cm). Bluing reaction to pores more common with smaller specimens. But maybe they are actually a different species entirely.