hi
can't help you with the agaric I'm afraid . . . .
the bracket is surely not
Polyporus squamosus - it looks to be on a willow?
Salix fragilis perhaps?
Daedaleopsis confragosa (blushing bracket) often grows like that on
Salix (like an irregular staircase) and can persist for months
that is by no means an ID btw
just a suggestion . . . .
cheers
Chris