I wondered if anyone could shed light on this Brugmansia branch. Only on one branch and the 2 photo's (First: 3 days before the second photo). There is nothing similar on any other branches and overall health and leaves all look healthy. Looks like the lenticels which where just white dots have blistered and then the tissue has healed on edges. I have read that the lenticels are have the ability to allow gases released through them, but not too much more. They are related to tomatoes, but sure if there is any connection. Have another of the same plant and it shows nothing like this.