On black cherry, the flesh tuff and zonate, staining gray green/blue.
I could not identify the wood as oak so I am wondering if it is another maze gill, and I was actually surprised there was a maze pattern when I looked. This is about 4", hard and thicker similar to artist conk in texture.
Slimy feel. No noticeable pores. Could it be a slime mould of some sort ?
Purplish hue, light color. Andexed gills.