I think I've seen moss growing in trees before, I think the explanation is that when trees are quite damp either due to their type or because of rainfall, or just having extra moisture inside, there are going to be organisms like moss or Spirogyra growing on it. It's a beautiful experience of nature in plain sight.
The bokeh shot of the flower is by far the best picture in the post for me.
Sounds like a correct explanation. Thanks for stopping by as usual.