Red Maple Concerns I am concerned about the health of my 80-year-old Red Maple which is the most outstanding feature of our front yard. I want to find out what the black lumps are that are growing on this tree and make sure that they are not something I need to take care of immediately. I am hoping that my tree will live many more years. About 10 years ago, we lost a large branch in a storm. A tree company removed the branch and cut the damaged branch off very close to the trunk. Now, this autumn, I see some sort of round black lumps growing out of the site of the cut branch. I also see something that looks like rot on the wood. I would appreciate your opinion on this: 1.) What are the black lumps? 2.) Do you see any other problems with the health of the tree? (I took pictures starting three weeks ago after the Red Maple lost all of its leaves, but leaves were green and full before autumn.) 3.) Is there anything I should do to make sure this tree stays healthy? I've attached 3 photos: 1.) This is a wide-shot of the tree with a red arrow pointing to the branch which was removed. Do you think I would need to remove the whole side of the tree if it is dead underneath the cut branch? 2.) A medium shot that I took today. Two of the three black lumps are now gone. Is there any other problems that you can see? 3.) A close-up of the round black lumps on the tree about 3 weeks ago. Looking on the internet, I wondered if it could possibly be tree decay fungus, King Alfred’s Cakes (Daldinia concentrica), but that is usually on Ash trees. If this is a fungus, does that mean that the tree underneath is dead? The tree seems healthy otherwise. I have never noticed these black lumps before this past month. Thank you for your time and I look forward to any advice you could offer.