I agree with you and know that the Dunstan is "debatable" to its origin. imho it's American, going by https://acf.org/wp-content/uploads/2016/09/leafcard.pdf. I know I have a chestnut tree. I know it has lots of teeth and no hair. My point is more a point of having periodic postings about Chestnut trees. I think once every 5 years would be enough on the same exact subject. It has been a trend every year. OK so more people are just discovering the issue every year I guess.