Answer: The poor tree -- sounds like it got hit with all kinds of problems. Well, cold shouldn't have been a problem in your region, since littleleaf lindens are popular, and very hardy, street trees here in Burlington, Vermont. But they are succeptible to mites, borers and other insects. The fungus is probably a secondary infection that attacked the tree after is was weakened by borers. Most likely, the tree won't make it, but get a decisive opinion from a professional arborist.
If you want to try again, find out all you can about the specific pests that attack the littleleaf linden, and work on a preventive maintenance program.
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