Fire Roll: Green Mullein Leaf In Cotton

We just figured out (put into words) that a fire roll ignites because of friction and the ash is a catalyst that supports combustion. That explains wood ashes and rust. How are we going to explain this one? A green Mullein leaf in cotton will fire roll ignite! Lol! Please follow the LINKS below and SUBSCRIBE. Thank you! Rudiger Roll, Fire Roll Playlist https://www.youtube.com/playlist?list=PLkoXX8XsMW3kLMA7kY_LznhzK5nOrA3Wd Mullein Fire Roll To Self Sustained Fire https://youtu.be/zZKBWAVkg-o