On Thursday I went looking for Solomon's Seal and Solomon's Plume to photograph. Getting a good picture of these that captures the look of the plant has been hard for me, so when Deb Nofzinger told me they were in bloom at Bradner Preserve, I went for a walk. I found both within a few steps on the path. They might need a few more days to fully open, but I took a lot of photos that I still have to sort through. This is one with both Solomon's Seal (left) and Solomon's Plume (right - also called False-Solomon's Seal) side by side. The Solomon's Seal has the flowers dangling below the main stem, while the Solomon's Plume has the flowers at the end.
I also saw a plant that I did not recognize, so I took a few photos with hopes that Chris would recognize it. She did not, but after a bit of digging, I am fairly certain it is a Canada Mayflower, Maianthemum canadense, also know as the Canadian May-lily, False Lily of the Valley, Wild Lily of the Valley, of the Two-leaved Solomon's Seal. A photo of it is shown below. There are a number of very similar members of the Maianthemum family, but the region would define it as the Canada Mayflower (other species are restricted to the west coast or Asia, so unless it was planted by man..).
Here are some links to additional information about the Canada Mayflower:
USDA Plant Database
Wiki
Illinois Wildflowers
USDA Plant Database
Wiki
Illinois Wildflowers