You know I’m fascinated by fungi. No, this is not to eat! but there so many varieties and different ways they grow. They’re found in unexpected places. This crop on a rotting stump.
A Google image search says it might be this type of ruffled mushroom.
Trichaptum abietinum is a species of poroid fungus in the order Hymenochaetales. It is saprophytic, growing from dead conifer wood. The white-gray cap is 1–4 cm wide and usually no more than .5 thick, shelved and fanlike, with brownish and leathery flesh. The spores are white, cylindrical, and smooth. Wikipedia