Old specimens(black, zoned cap with red exhibition on cracks and cap margin) light weight(about 10cm wide).
Fruiting on big leaf maple(Acer macrophyllum).
Note: maze like pore surface underneath.
Polypore key from PNW key council and mushroom expert M. Kuo below:
|I’d Call It That||3.0||6.25||1||(Hendre17)|
sum(score * weight) /
(total weight + 1)