Today was full of interesting discoveries at Centennial Woods. I identified this plant, with the help of Walt, as a Hobblebush (Viburnum lantanoides). After researching more about it, I found that it is a small, shrublike plant, named after the hikers tripped on its vines. Although the Hobblebush prefers high-altitude areas, it can survive in nutrient-poor lowlands.
Moral of the story: if you don’t know, ask.