Lou Campbell Preserve is part of the Oak Openings system of parks and preserves west of Toledo OH. I was there Tuesday on a successful search for orchids. These St. John's-worts were also nicely in bloom. They turned out to be Hypericum swinkianum. This was first recognized and described as a new species in 2016 from specimens from the Chicago region. Since then it has been found in the northern part of Michigan's Lower Peninsula. The Oak Openings site seems to be the most southeastern location so far.