Here's another plug for Kitty Todd. This preserve is always worth a visit on its own, and is in the Oak Openings region that includes many fascinating parks and preserves. Purplehead snezzeweeed is one of many delights. This is a great place for Michigan people because it has a surprising number of plants that are rare or do not occur in Michigan. The reverse is also true. There are as many plants just a few miles north in Lenawee County that are rare or do not occur in Ohio. Purplehead is a Michigan special concern species.