Mr. Levy, it is surprising how many of us still have our original field notebooks. When my kids moved me east to this infernal Ohio, I found several dating back 30 years to my days with the Florida Park Service, and the Dept. of Environmental protection.
Most of the shelf, or bracket fungi will catch and maintain a spark very well. These are the fungi that stick out from a tree. Quite hard, but easy to break off a chunk.
Back to the ramrod questions. Following the Civil War, quite a few ramrods were found "down range" from the various shooting lines, from both sides of the conflict. IIRC, our scout master showed us one that was stuck in a tree, and had a century of tree growth almost swallowing it.
Don't know why they called it "Civil War". I've been to war, and there was nothing "civil" about it.