Fungus or Mildew
I believe this is a Calycanthus/Sweetshrub. The leaves are covered in tiny black spots and have eventually been shriveling up and dying. I'm wondering if it's mildew or a fungus from the soil? I appreciate the help. Shannon Stewart
Calycanthus can get several fungal twig and branch canker diseases, but we can't determine that from your photos.
We suggest pruning and discarding infected twigs and branches on a dry day.