Walking in the woods, I noticed this. I'm thinking that it might be Iris sibirica, but not sure.
It looks like i. versicolor or i. virginica to me. The two are usually difficult to distinguish between.
Here's my i. versicolor, but I'm still not convinced it was properly id-ed either.
It looks to me like the I.Virginica I just planted a few weeks ago. Could';t believe it bloomed, but there ya go...