Identification: Fungus on tree wound.. ID needed

Found on an landscape-grown silver maple in suburban Toronto, Ontario.

Pictured is the unidentified fungus from a large stem wound at chest height, but it also appears in several other wounds throughout the crown. Colour suggests Laetiporus; but rather than a bracket/conk, it has a sponge toffee -like appearance to it that suggests something else. Maybe Gloeophyllum odoratum? And what about the black patches?

What do you think? Can anyone ID at least to the genus? Thanks!

Pictured on May 20, 2015.

 

Thanks for posting!
Was the texture spongy, firm or evanescent/watery? I'm not coming up with any good ideas on this one yet, but the texture to the touch would eliminate some ideas at least.

cheers,
frog