A Year in the Valley

This was growing on the cut surface of a sycamore log.  It has been difficult to identify, using Google Lens and the Collins Guide.  The most likely is the wrinkled crust fungus (Phlebia radiata).  This one doesn’t look very wrinkled from the photo but is warty enough and orange.  Or white rot fungus (Phanerochaete chyrsorhizon) as there is obvious white rot next to it.  White rot fungus has the ability to break down pesticides and plastics.  The white is cellulose that they leave behind after they have digested wood.  I really like the bright pattern of the fungus on the log.