Every year the U of Michigan teaches a Woody Plants class. I didn't take it when I was in school, but my sister did, and it's one of these legendary courses that people remember for a long time.
Here's the links and notes I could find easily. It's prompted by the Ann Arbor Chronicle's story about the city of Ann Arbor tree inventory going on now, which I hope will yield a precise map of where all of the public juneberry trees are.
Course listing: NRE 436: Woody Plants Biology and Identification
Woody Plants is an intensive field- and lecture-based learning experience, in which you will learn to identify 160 trees, shrub and vine species that are important in Michigan environments. You will learn about their taxonomy, distribution, habitat associations, and biogeographic history and how to identify them in their leafless winter condition. The lab component consists of weekly field trips in the Ann Arbor area, which include riparian and floodplain habitats, glacial lakes, moraines, bogs, fens and mesic forests. The lectures cover elementary aspects of plant identification, taxonomy and ecology; however, the broader themes include biogeographic history and the assembly of Michigan plant communities, both before and after major glaciations, ecological specializiation, and impacts of global warming and other anthropogenic environmental changes.
The required textbook for Woody Plants is Michigan Trees by Burt V. Barnes and Warren H. Wagner. The authors taught the Woody Plants class from 1965 to 2005 and know their topic well. The books are available at Shaman Drum bookshop on 311 State Street.
Burt Barnes home page at SNRE
Undergraduate and graduate teaching in forest ecology; landscape ecology; natural history, and identification of Woody Plants. Research focuses on the theory and application of the landscape ecosystem approach. Studies emphasize spatial mapping of landscape ecosystems as the basis for conserving and managing ecosystems at multiple scales. Research on diversity of ecosystems and biota in upland, riverine, and wetland ecosystems. Specific areas include genetic and systematic studies of aspen species (genus Populus), worldwide and comparative studies of east Asian and North American forests and species of the temperate zone.