Spores:; brown in mass (spores produced internally)
Trails: Griffin
Saprophytic
Geastrum saccatum, commonly known as the rounded earthstar, is a species of mushroom belonging to the genus Geastrum. It has a worldwide distribution and is found growing on rotting wood. It is considered inedible by mushroomers because of its bitter taste. It is a common mushroom, but collections are at their peak during late summer.