Wolfnowl, it may be a Willow, I would say an ornamental variety given that it is in a park near a garden. It certainly is not the Willow species we usually see. It's small, about 10 ft, that's it.
This shot is really an in-camera double exposure, according to my notes. As I said before, regarding such images, the purpose is to create and convey an impression and not be literal. I created a larger copy, if anyone is interested. Thanks for all the comments.
JMR
Edit- **Yep, Wolf nowl was right a weeping birch it is**