By Cliveanne
Derbyshire,
United Kingdom 
Fungi: Whilst out walking Sunday afternoon I came upon this fungi. Any ideas what it is? If I find anything like this in my garden, should I sit & admire it or get rid? The pictures are on tree, close-up & top.
10 Aug, 2010
Answers
Thank you, I have not seen the likes before, only bracket, toadstool/mushroom types & some very small stuff on rotting timber. Oh, & a very large puffball
10 Aug, 2010
It probably got into the tree from the wound caused by the farmer/land owner hammering nails into the trunk to use as a free fence post!
10 Aug, 2010
Few people realize how damaging this is to the tree!
10 Aug, 2010
Previous question
It looks like Laetiporus sulphureus and is normally found on Oak and occasionally other tree species. It stains the dead rotten heartwood red.
If you have a large tree in your garden with this, then the heart wood is starting to rot.
10 Aug, 2010