Fomes graveolens
Globifomes graveolens
Globifomes graveolens
Mature examples that have overwintered.  Note the cubic rot on log.
Described at
Fungi Growing on Wood
Globifomes graveolens
Formerly Globifomes graveolens. This odd polypore
has overlapping caps and can be found on
hardwood logs. It has a sweet smell when cut open
and is commonly called "sweet knot".