tree disease
 

Hi all
I wonder if anyone can help, my father in law has a really cracking tree at the bottom of his garden.
Besides not knowing what it is (help again) it has acquired a fungus type growth on it, the trunk looks ok.
I have put some pictures on my website at
http://groups.yahoo.com/group/whytony/

just go to the site, join the group, and look in the pictures folder, click on them to enlarge, any help would be much appreciated
t