At our Club Special Event this week, members Gina and Scott brought in a few specimens of a Hypomyces sp. that we had never encountered before, Hypomyces lateritius. This relative of the Lobster, parasitizes Lactarius indigo. It was obvious that this was the underlying species when we broke the cap and stem saw the immediate blue color change. There isn't much information on this species in books or online, but we did find a few photos and references to its occurrence in the southwestern part of Wisconsin, where Gina and Scott found these.
Cora Mollen, author of Fascinating Fungi of the Northwoods and founder of Northstate Mycological Club.
Northstate Mycological Club