Any ideas on what this might be. I've looked through a few tree books and no luck. It has white flowers that have already fallen off. There is some type of fungus growing on the tree that is starting to kill the smaller limbs and I need to either find a way to kill the fungus or get some bow wood (on that note, does fungus growing on the bark affect the wood?) Note the fungus in the picture- any idea on what could be causing it? Any help appreciated.