CHICAGO (WCIA) — Following an initiative led by Wheaton elementary school students, Governor JB Pritzker named the Calvatia gigantea — also known as the “giant puffball” — as the official mushroom of ...

What Is a Giant Puffball Mushroom? Giant puffball mushrooms or Calvatia gigantean are medicinal mushrooms that grow on decaying plant material. You can find them near the edges or openings of forests ...