Perreniporia fraxinea

[benedmonds]

A neighbours willow had collapsed on to his garage, and we noticed this fella.. on a nearly tree.

 

Tree looks in good health.. with no die-back in crown.

[Wolfie]

That's a lot of bracket!

An Ash that i took down last year with that amount of perenniporia bracket had very little sound wood left keeping it up.

[KTSmith]

Yes, that is a lot of bracket. Maybe more important than the shear mass or volume of fruiting body is the degree of arc or circumferential extent around the base of the tree. I accept the original description that the crown looks OK, but the sapwood is dead and decaying inward from the points of attachment of the brackets. Or that's my bet!