Alder, birch, willow area.
Mountain Lake, Orcas Island WA
White spores.
Shelf style mushrooms growing on a mostly dead tree
I think....very young, less than 1"
Hickory Run State Park
Possibly Armillaria calvescens or gallica. Base appears bulbous. White scales on cap not described in my resources.
Hole is about 12x18 inches